Common Dermatologic Presentations: The Red Face THE RED FACE

THE RED FACE
Common Dermatologic Presentations: The Red
Face
Sharon Barthelette, MD, Laura Rosenzweig, BA, Kimberly A. Cayce, MD, Gloria F. Graham, MD, and
Steven R. Feldman, MD, PhD
Abstract
• Objective: To review common dermatologic causes
of the “red face.”
• Methods: Qualitative assessment of the literature.
• Results: Patients with dermatologic problems frequently present in the primary care setting. The
most common causes of “red face” are rosacea,
acne, actinic keratoses, seborrheic dermatitis, and
atopic dermatitis. In cases without complicating factors, the primary care physician can make a clinical
diagnosis and initiate treatment. If the diagnosis is in
question or the patient has many complicating factors, a referral to a dermatologist or other specialist
may be indicated.
• Conclusion: Prompt recognition and understanding
of common causes of red face will prevent costly
diagnostic studies and direct essential therapy.
C
utaneous disease is frequently encountered in primary
care. In a chart review study of 570 patients who presented to their primary care physician, 36.5% had at
least one skin problem, and in more than half of those with skin
disease, their skin condition was the chief complaint [1]. The
presenting complaint of a “red face” may suggest a wide range
of skin diseases. The more common include rosacea, acne vulgaris, and various forms of dermatitis. In most cases, a thorough history and physical should be sufficient to make a diagnosis and to select appropriate initial therapy. Prompt
recognition and understanding of these common conditions
will prevent costly diagnostic studies and direct essential
therapy. If the diagnosis is in question or the patient has many
complicating factors, a referral to a dermatologist or other specialist may be indicated. This article discusses the clinical presentation, diagnosis, and treatment of common skin diseases
that present as red face.
use of over-the-counter anti-acne washes. He is otherwise healthy and is not taking any medications. Physical
examination reveals pustules and open comedones on
the forehead, cheeks, and chin. There are no cysts or
nodules present.
This patient has a mild form of acne vulgaris. Acne affects
almost 80% of people at some point between the ages of 11 and
30 years [2]. Acne often occurs on the face, chest, and back (and
occasionally the buttocks) and appears as comedones (comedonal acne) (Figure 1a), papulopustules (papulopustular acne)
(Figure 1b), or nodules (nodular acne and acne conglobata)
(Figure 1c). The severity of acne is determined by the number
of papules, pustules, and nodules present; however, factors
such as psychosocial impact and previous response to therapy
also are considered [3]. Mild acne consists of few papules and
pustules but no nodules, while numerous papules, pustules,
and nodules constitute severe disease [3]. Acne conglobata,
which usually spares the face, is the most severe form and is
characterized by burrowing and interconnecting abscesses and
scars, leading to pronounced disfigurement. Acne is caused by
pilosebaceous gland inflammation and follicular plugging and
usually develops during puberty, when elevated levels of circulating androgens enhance pilosebaceous gland activity.
However, acne does not necessarily remit with the end of
puberty, and it may present beyond the mid-twenties. Acne
tends to be more severe in men and has been associated with
XYY syndrome [4]. The occurrence of acne appears to have a
genetic component in that the majority of patients with nodular acne have a parent with severe acne [5].
Differential Diagnosis
Several red face conditions must be distinguished from acne.
Rosacea may present with papules and pustules but is typified
Case 1—Acne
A 14-year-old boy presents to his primary care physician
with a complaint of a “red face with bumps for the past
half year.” He has noticed some improvement following
36 JCOM January 2004 Vol. 11, No. 1
From the Department of Dermatology, University of Texas Health Science
Center at San Antonio, San Antonio, TX (Dr. Barthelette); and the Center for
Dermatology Research, Wake Forest University School of Medicine, WinstonSalem, NC (Ms. Rosenzweig and Drs. Cayce, Graham, and Feldman).
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CLINICAL REVIEW
A
B
C
Figure 1. (A) Comedonal acne, (B) papulopustular acne, and (C) nodular acne.
A
B
C
Figure 2. Presentation of rosacea. (A) Persistent erythema seen in rosacea, (B) papulopustular rosacea, and (C) rhinophyma.
Figure 3. Perioral dermatitis.
Figure 4. Contact dermatitis.
by facial flushing and telangiectasias, and comedones are not
present. In perioral dermatitis, micropapulopustules characteristically are concentrated around the mouth. Infectious folliculitis, whether gram-positive or gram-negative, may sometimes be confused with acne. The clinician should suspect
gram-negative folliculitis in acne patients on prolonged antibiotics whose acne suddenly worsens. The follicular papules and
pustules seen in eosinophilic pustular folliculitis are pruritic
and are generally more extensive, involving the face, neck,
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Figure 5. Actinic keratoses.
trunk, and proximal extremities. Acne excorie, small eroded
lesions that have been picked at, may occur alone or in conjunction with acne, making the acne appear much worse.
Etiology and Pathogenesis
The occurrence of acne results from a number of interacting
factors. During adolescence and young adulthood, androgens stimulate the sebaceous glands to produce more sebum. Abnormal desquamation of the epithelial cells leads to
Vol. 11, No. 1 January 2004 JCOM 37
THE RED FACE
Figure 6. Seborrheic dermatitis.
Figure 7. Atopic dermatitis.
Figure 9. Ulerythema ophryogenes.
A
B
Figure 8. Tinea faciei.
Figure 10. Dermatomyositis.
C
Figure 11. (A) Acute, (B) subacute, and (C) chronic forms of cutaneous lupus erythematosus.
obstruction of the sebaceous follicle, which appears clinically as noninflammatory open comedones (blackheads) and
closed comedones (whiteheads). As the amount of sebum
within the blocked follicle increases, the sebum leaks across
the follicular wall into the dermis. The presence of sebum
within the dermis induces the skin inflammation visible as
papules, pustules, and nodules. Within the blocked ducts,
the skin bacteria Propionibacterium acnes proliferate and produce large amounts of free fatty acids. The inflammatory
38 JCOM January 2004 Vol. 11, No. 1
process is augmented by chemotactic factors (activation of
the classic and alternative complement pathways results in
the formation of C5a and production of low-molecularweight, serum-independent neutrophil chemotactic factors)
and proinflammatory mediators (lysosomal enzymes and
reactive oxygen species) [6,7].
When taking the history of a new patient, the clinician
should ask about cofactors in the occurrence of acne. Patients
may be using acne-promoting medications such as lithium,
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hydantoins, androgens, and glucocorticoids. Some comedogenic cosmetics may contribute to the occurrence of acne.
Patients should opt for water-based cosmetics. Contrary to
urban folklore, there is no substantial evidence that acne is
caused by certain foods such as chocolate or fried foods.
Patients with acne may develop their own home remedies
that involve harsh abrasives. These cleaning techniques will
aggravate the acne and should be avoided. Additionally,
pressure from propping the face on the hands and occlusion
from leaning on the telephone can be aggravating to the acne
lesions. These directly irritating factors are termed “acne
mechanica” and often are overlooked by the patient [8].
Treatment
Because adolescents and adults with acne can experience
low self-esteem, depression, and social isolation, it is important to treat acne promptly and aggressively. Medical therapy of acne is determined by severity of the disease. A report
from the Global Alliance to Improve the Outcomes of Acne
included guidelines for acne therapy [9].
Mild disease. First-line therapy for treating mild acne with
comedones and little inflammation is tretinoin, a topical
retinoid. Tretinoin is a vitamin A derivative that both unseats
existing comedones and retards the creation of new ones by
increasing the rate of cell turnover and decreasing cell adhesion [10]. Side effects of tretinoin include dryness and erythema. Patients with sensitive skin may benefit from the
milder cream formulation (0.025% cream) as opposed to the
gel variety (0.01% gel). A microencapsulated tretinoin 0.1%
gel has been developed that may be less irritating. If these
formulations are intolerable, patients may use tretinoin less
frequently (3 times a week) and slowly increase the frequency of application to once per day. Patients should be educated about increased photosensitivity while on vitamin-A–
derived therapy and should be advised to limit sun exposure and wear sunscreen. An alternative topical retinoid is
tazarotene gel, which was proven in a multicenter, doubleblind, vehicle-controlled study to be safe and effective for
mild to moderate acne [11]. Adapalene (gel or solution) is a
naphthoic acid agent with action similar to tretinoin but is
gentler on the skin [12].
Topical antimicrobial therapy can be added when there is
an increased inflammatory component in the acne presentation. Clindamycin and erythromycin topicals are primarily
used and are equally effective [13]. These agents inhibit the
proliferation and activity of P. acnes and mildly decrease inflammatory response. They are available in a variety of
forms, including lotions, solutions, gels, creams, and medicated pads. Benzoyl peroxide is a topical antibacterial agent
that also is available in a variety of formulations (cleanser,
gel, cream, lotion, solution, pads) and concentrations (2.5%,
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5%, 10%) and can be applied once or twice daily. Weaker
concentrations are available over the counter. When initiating topical antibacterial therapy, clinicians should advise patients that initially their skin may become mildly red and
scaly but this side affect will likely abate with continued use.
Contact allergy may occur in 1% to 2% of patients; signs of
allergic reaction should prompt discontinuation of the therapy [13]. Benzoyl peroxide should not be applied concurrently with topical tretinoin because it will oxidize the tretinoin,
rendering it ineffective; benzoyl peroxide may be used in the
morning, with tretinoin applied at night. This interaction is
not an issue with other retinoids such as adapalene and
tazarotene. Benzoyl peroxide has been combined with topical erythromycin in an effective formulation. Another topical
alternative is azelaic acid 20%, which has comedolytic and
antimicrobial properties [14] as well as a skin lightening
effect that is useful in alleviating postinflammatory hyperpigmentation.
Moderate disease. In moderate acne or failed topical regimens,
oral antibiotics in addition to the topical retinoids are appropriate. Frequently used oral antibiotics include tetracycline,
doxycycline, minocycline, trimethoprim-sulfamethoxazole,
and erythromycin. Oral tetracycline (initially 500 mg twice
daily) is an affordable, effective treatment modality. Tetracycline must be taken on an empty stomach to be effective,
while doxycycline and minocycline, which are derivatives of
tetracycline, can be taken with food. Adverse effects of doxycycline include gastrointestinal upset and increased photosensitivity. Antibiotic resistance is less likely to develop with
minocycline than with other antibiotics [15]. However, the use
of minocycline is limited by its higher cost and potential
adverse effects, which include reversible central nervous system disturbances (ataxia and vertigo), mucocutaneous pigmentary changes, and the rare development of drug-induced
hepatotoxicity and systemic lupus erythematosus [16,17].
Tetracycline, doxycycline, and minocycline should not be
used in children or pregnant women due to their capacity to
stain developing teeth yellow. Erythromycin can be used in
pregnancy, and it can be taken with food; however, it may
cause significant gastrointestinal upset. Trimethoprimsulfamethoxazole may be used in erythromycin- and
tetracycline-resistant acne but should be avoided in patients
allergic to sulfonamides. Once the desired effect of the antibiotics has been achieved, the dosage should be gradually
tapered over several months to maintain control. Patients
should be instructed to increase their dosage to the original
starting dose if an acne flare occurs while tapering.
Female patients may benefit from the use of oral contraceptive pills that contain both estrogens and antiandrogens
[18]. Estrogens can improve acne by decreasing sebum production and diminishing androgen effects (by blocking
Vol. 11, No. 1 January 2004 JCOM 39
THE RED FACE
testosterone-receptor sites and lowering free testosterone and
dehydroepiandrosterone-sulfate levels). They are particularly
beneficial in patients whose acne appears to flare at certain
times in the menstrual cycle. Patients with signs of polycystic
ovarian disease, including hirsutism, acne, and obesity, also
will benefit from hormonal therapy. The first low-dose oral
contraceptive to receive an indication for acne treatment by
the Food and Drug Administration (FDA) was norgestimate/
ethinyl estradiol. Drospirenone/ethinyl estradiol also is
effective in treating acne. This agent is unique in that it contains drospirenone, a derivative of 17α-spironolactone,
which is a potassium-sparing diuretic with antiandrogenic
properties. A trial of spironolactone may be attempted in
female patients when other therapies have failed and pregnancy will be avoided during the treatment period. This
drug, usually initiated at 25 mg daily, blocks androgen receptors and inhibits 5α-reductase activity. More potent antiandrogenic drugs have been used in Europe with overwhelming success [18]; however, these agents are not available in
the United States. Hormonal agents can be used with topical
and oral acne therapies.
Severe disease. For severe or recalcitrant cases of acne, referral should be made to a dermatologist for oral isotretinoin
therapy. Isotretinoin is indicated for patients in whom topical therapies and oral antibiotics have failed, especially in the
setting of severe nodular or scarring acne. Patients may need
isotretinoin therapy for up to 5 months, and repeat courses
of drug therapy may be necessary for recurrences.
Prior to beginning isotretinoin therapy, 2 negative pregnancy tests must be performed on any woman of reproductive age, regardless of response to questions about sexual
activity. Oral isotretinoin is a highly teratogenic drug that
can result in fetal central nervous system anomalies, facial
dysmorphia, and ear, eye, and cardiovascular abnormalities
[19]. Sexually active women should use 2 contraceptive
methods from 1 month before beginning isotretinoin therapy until 1 month after completing the therapy. Urine pregnancy tests also should be performed at monthly visits.
Adverse effects of isotretinoin are common and include
cheilitis, blepharoconjunctivitis, epistaxis, and photosensitivity. Less frequent side effects include decreased night
vision, headache, and hair loss. Myalgias and arthralgias are
common in patients undergoing isotretinoin therapy, but
myalgias and arthralgias also are associated with untreated
acne conglobata and acne fulminans [20]. Approximately
10% of patients with isotretinoin-related musculoskeletal
pains develop asymptomatic bony growths of the spine [19].
A rare adverse effect of isotretinoin use is pseudotumor cerebri. Isotretinoin therapy also has been associated with elevated triglycerides, dyslipidemias, and liver function test abnormality. For this reason, measurements of lipid levels and
40 JCOM January 2004 Vol. 11, No. 1
liver function should be performed prior to and during
isotretinoin therapy. Patients must be seen monthly for the
duration of isotretinoin therapy for clinical evaluation, laboratory work review, and medication refills.
The relationship between depression and isotretinoin
therapy has been widely debated. The FDA’s Adverse Event
Reporting System database lists 37 reports of suicide, 110 reports of hospitalization for depression, suicidal ideation, or
suicide attempt, and 284 reports of depression without hospitalization in patients receiving isotretinoin between 1982
and 2000 [21]. However, no molecular link between depression and isotretinoin has been identified, and there does not
seem to be a causal relationship between suicide and isotretinoin therapy [22]. Nevertheless, clinicians who prescribe
isotretinoin should continually monitor for signs of depression and stop the medication promptly if depressive symptoms occur.
Typically, comedonal and papulopustular acne can be
managed by a primary care provider. Cases resistant to topical keratolytics and an adequate course of oral antibiotics
(continuous, full-dose therapy for at least 1 year) should be
referred to a dermatologist [23,24]. Patients with nodular
acne should be referred to a dermatologist in a more timely
manner to help avoid permanent physical and psychologic
consequences.
Case 2—Rosacea
A 45-year-old white woman presents with complaints of
2 years of facial flushing. She reports that the flushing
intensifies when she drinks tea and coffee. She experienced mild acne as an adolescent. She is in good health
and takes no medicines other than a once-a-day vitamin. Her mother experienced similar facial reddening
when she was in her forties. Physical examination of the
patient reveals an erythematous face with clusters of
papules and pustules on the chin and cheeks.
This patient has rosacea, a condition that affects 13 to 14 million Americans [25,26]. The age of onset of rosacea is between 30 and 50 years. It is most common in persons of
Celtic origin and has a 3:1 female predominance. A history of
acne vulgaris may be present, but it is not necessary for the
development of rosacea. Patients with rosacea present with
flushing or persistent erythema (Figure 2a), telangiectasias,
and clusters of papules and pustules (Figure 2b). Secondary
features of rosacea include a burning or stinging sensation,
elevated red plaques, or rough, scaly patches. Women are
more likely to be symptomatic on the chin and cheeks, while
men often show signs of rosacea on the nose [27]. Chronic
disease may result in a bulbous appearance of the nose,
termed “rhinophyma” (Figure 2c). Ocular symptoms occur
in many patients with rosacea and occasionally present
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without facial skin signs. The signs of ocular rosacea include
conjunctival injection, eyelid margin irritation, and telangiectasias. The patient with ocular rosacea may report stinging, foreign body sensation, and tearing [28,29].
tional stress. Many people may associate the findings of
rosacea with chronic alcoholism. Although alcohol may be a
trigger for flares of rosacea, the signs of rosacea are not secondary to long-term alcohol abuse.
Differential Diagnosis
A variety of diseases may present with signs and symptoms
similar to those in rosacea. Lupus erythematosus may be
considered in the differential diagnosis; however, lupus erythematosus is less likely to have the pustules of rosacea and
presents with the classic malar rash in approximately half of
patients. Rosacea may be differentiated from acne vulgaris
by the absence of comedones in rosacea. Seborrheic dermatitis also should be considered, but its distribution includes
the scalp, glabella, and nasolabial and mesiolabial folds. Seborrheic dermatitis is characterized by the presence of greasy
scales that are noticeably absent in rosacea. One “do not
miss” diagnosis is carcinoid syndrome secondary to a malignant tumor presenting with paroxysmal flushing. Pustules
and papules are not present in carcinoid syndrome. If carcinoid syndrome is suspected due to the presence of weight
loss, diarrhea, blood pressure lability, or shortness of breath,
a referral to an internist should be made promptly.
Treatment
Rosacea is not a curable disease, and the goal of therapy
should be adequate control and alleviation of the symptoms.
Clinicians can be of great help to patients by educating them
about rosacea triggers. Rosacea patients should be advised
to avoid hot drinks and foods, temperature extremes, and
other rosacea stimuli. Mild disease is controlled via topical
therapies, while more severe disease may require systemic
therapy. Additionally, patients with ocular manifestations of
rosacea may require referral to an ophthalmologist.
Topical antibiotic medications are typically chosen first as
therapy for mild to moderate rosacea. The FDA has approved
metronidazole 0.75% (gel, cream, lotion) and metronidazole
1% (cream) for treatment of rosacea [35]. A study by Jorizzo et
al showed equal efficacy of once- and twice-daily application
of metronidazole 1% cream [36]. Patients with dry skin may
better tolerate the cream formulations. Azelaic acid 20% cream
applied twice daily for patients with papulopustular rosacea
demonstrated a comparable response to treatment with 0.75%
metronidazole [37]. Azelaic acid also is available in a 15% gel.
Sulfacetamide is another useful topical agent, but it should not
be prescribed to patients with sulfa allergies. Other secondline agents include clindamycin 1% solution, gel, or lotion and
erythromycin 2% solution. Patients also may benefit from
benzoyl peroxide 2.5%, gradually increasing to 5% and 10%
concentrations. However, the drying nature of this product
may make its use intolerable. In patients with papular and
pustular lesions that do not respond to standard therapies,
tretinoin cream (0.025%, 0.05%, 0.1%) may be applied. However, it must be used with caution as tretinoin may exacerbate
the underlying inflammation and lead to worsening erythema
and angiogenesis [38]. Those with concomitant acne vulgaris
could benefit. Patients should start with the lowest concentration, applying it 2 to 3 times per week at night and gradually
increasing the potency and frequency of use. Topical corticosteroids should be avoided in the treatment of rosacea.
Although corticosteroids may initially alleviate the inflammation, chronically they will thin the skin and worsen its appearance. In fact, corticosteroid use on the face can induce erythema and pustule and papule formation, resulting in the so
called steroid rosacea.
Systemic treatment is preferred if topical treatment fails or
if severe disease is seen on initial presentation. Oral antibiotics also are indicated for initial therapy of ocular rosacea.
First-line agents include oral tetracycline, minocycline, and
doxycycline. Oral trimethoprim-sulfamethoxazole and metronidazole are appropriate second-line treatment options.
Etiology and Pathogenesis
Despite the great number of studies examining the pathogenesis of rosacea, the precise etiology is still uncertain. The
contributions of bacterial infections, mite infestations, and
abnormal vasodilatory changes have been widely debated.
The increased incidence of Helicobacter pylori positivity in
patients with rosacea has led researchers to postulate an
association between Helicobacter infection and skin disease
[30]. However, a cause-and-effect relationship has not been
firmly established. The hypothesized role of Demodex mites
in the development of rosacea was supported by evidence of
a higher prevalence and density of mites in the follicles of
rosacea-affected patients compared with nonaffected patients [31]. However, tetracycline therapy for 1 month did
not significantly decrease mite counts, although rosacea
symptoms improved [32]. Abnormal vasodilation patterns
have been identified in patients with rosacea. In one study,
patients with rosacea had impaired venous blood flow from
the face to the brain through the emissary veins, resulting in
vasodilation of facial blood conduits [33]. The heightened
vascular response to environmental stimuli as well as longstanding facial vasodilation is thought to result in the skin
changes evident in rosacea.
Flares of rosacea are provoked by a variety of stimuli [34].
Environmental factors, such as sun exposure or extreme cold,
commonly prompt rosacea flares. Rosacea also may be aggravated by certain medications (ie, corticosteroids, niacin,
nifedipine, nitroglycerin), spicy foods, hot drinks, and emowww.turner-white.com
Vol. 11, No. 1 January 2004 JCOM 41
THE RED FACE
A condition related to rosacea is perioral dermatitis. This
disease occurs most commonly in women, often with a
slightly earlier age of onset (age 16 to 45 years) than rosacea.
It is not usually as chronic as rosacea. The lesions are similar
in appearance to those in rosacea but are limited to the area
surrounding the mouth (Figure 3). Occasionally, the periorbital areas, glabella, and forehead also are involved. The
treatment of perioral dermatitis is similar to that of rosacea.
Referral to a dermatologist should be considered for refractory or complicated disease. A dermatologist can prescribe isotretinoin for severe rosacea that is unresponsive to
standard therapies. Patients with recalcitrant telangiectasias
may benefit from pulsed-dye laser therapy [39]. The primary care physician should consider referring patients with
rhinophyma for surgical intervention since this condition
often does not respond to topical or oral medications. Options available for surgical treatment of rosacea include
cryosurgery, dermabrasion, electrosurgery, or lasers.
Case 3—Contact Dermatitis
A 25-year-old white woman presents with complaints of
facial itching and redness. She reports that the rash
appeared overnight 5 days ago. She has no known allergies and is not taking any medications. She has been
taking an over-the-counter antihistamine that she says
moderately alleviates her pruritus. On physical examination, her face and neck are erythematous with scattered
vesicles. The rash spares the periorbital and perioral
regions. She also has increased redness of her palms.
She reports no new animal or plant exposures. She
denies using cosmetics. When asked about any recent
travel, she reports a day trip to the beach almost a week
ago. Further questioning reveals that she applied a
friend’s sunscreen to her face at that time.
This patient has a classic case of contact dermatitis, likely
caused by sunscreen use. Contact dermatitis can present in a
variety of forms depending on the location and duration of
exposure. In acute eruptions, macular erythema, papules,
vesicles, and bullae are seen (Figure 4). However, in chronic
contact dermatitis, patients present with lichenified (thickened) skin with fissuring and crusting. When contact dermatitis affects the periorbital region (often seen in airborne
allergens), the eyelids can become severely edematous. Common culprits found in contact dermatitis involving the area
around the mouth include lipstick, chapstick (especially with
sunscreens), toothpaste, bubblegum, and some foods.
Differential Diagnosis
Given the varied presentations of contact dermatitis, the differential diagnosis is broad. Leading the list of possibilities
are atopic dermatitis and tinea infection. Taking a good pa42 JCOM January 2004 Vol. 11, No. 1
tient history is key. In a patient who has a region of eczematous skin, contact dermatitis should be foremost on the list
of possible diagnoses. A thorough exposure history should
be obtained with particular attention to exposures taking
place around the time the patient noticed the rash. The clinician should ask about new cleaning products, cosmetics,
topical medications, sunscreen, pets, or plants as well as
about recreational activities and work conditions that may
be the cause of the dermatitis. Persons at risk for occupational exposures include those working in the health care,
agriculture, recreational, and maintenance industries. Skin
disease is the second most common occupational illness in
the United States, accounting for 41,800 cases and 11.5% of
work-related illness [40].
The 2 forms of contact dermatitis, nonallergic irritant dermatitis and allergic dermatitis, cannot be differentiated
based on physical examination alone. Not only do these
2 entities produce similar physical findings, but there also is
significant overlap between the inflammatory mediators
involved in their pathogenesis. In addition, there are many
agents that can produce both allergic and nonallergic dermatitis. Nonallergic irritant variety dermatitis may involve
single or chronic exposure to an agent that is directly toxic to
the skin. Irritant dermatitis may occur within hours of the
exposure to a strong agent or after several exposures to a
weaker irritant. Responsible agents in irritant contact dermatitis include cleaning agents, abrasives, organic solvents,
detergents, soaps, desiccant powders, plants, animal enzymes, soils, dusts, and water.
Patch tests can be helpful in patients for whom the
causative agent of the dermatitis cannot be identified. Patch
testing is only useful in identifying causative agents of the
allergic variety of contact dermatitis. The commercially
available T.R.U.E. allergen patch test identifies allergies to
23 common agents, including fragrances, preservatives, metals, rubber compounds, and adhesives. The patch test
should be performed by an individual who is familiar with
the technique. In this test, chemicals are applied to a patch
that is then taped to the patient’s back. The patient returns
after 48 hours to have the reactions graded. The patch is then
reapplied and read after another 48 hours as some reactions
may be delayed. However, the agents identified may or may
not be the causative agent of the dermatitis, and the T.R.U.E.
allergen patch test does not include all the thousands of
agents that are potential allergens.
Etiology and Pathogenesis
Allergic contact dermatitis is an immunologic phenomenon
involving cell-mediated or delayed hypersensitivity reactions
(type 4 hypersensitivity). In allergic contact dermatitis, the
individual must first be sensitized to the antigen. During sensitization, the antigen is engulfed and processed by the
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CLINICAL REVIEW
Langerhans’ cell so it can be expressed on the cell’s surface.
Through dermal lymphatics, the Langerhans’ cell then migrates to the regional lymph nodes and presents the antigen
to T lymphocytes. This interaction is followed by the production of cytokines and the proliferation of T lymphocytes that
are specific for the antigen [41]. Repeat antigen challenges
will result in the appearance of a rash in 24 to 48 hours after
the exposure. However, the signs of allergic contact dermatitis can develop as quickly as 8 to 10 hours and as late as 4 to
7 days following exposure. Common agents in allergic contact dermatitis include poison ivy or oak, nickel, rubber compounds, cosmetics, and medications [42]. If sensitization
occurs to one member of an antigen family, cross-reactivity
can occur from exposure to other family members. For example, if patients are sensitive to benzocaine, they also must
avoid cross-reactive agents such as anesthetics (procaine),
hair dyes (p-phenylenediamine), sunscreens (p-aminobenzoic
acid), and textile dyes (aniline dye) [43].
Treatment
Therapy for contact dermatitis is multidimensional. First
and foremost, the patient should be advised to avoid the
agent causing the dermatitis. Although this method for preventing the dermatitis may sound simple, complete avoidance may be unacceptable or impossible for the patient to
achieve. In this situation, patients should take steps to protect themselves through barriers (ie, gloves). Commercially
available compounds such as bentoquatam applied prior to
exposure to poison ivy may lessen the occurrence of contact
dermatitis. Mild dermatitis can be treated with topical
steroids, and antihistamines (ie, hydroxyzine, diphenhydramine, loratadine, or cetirizine) are key for decreasing the
associated pruritus. Patients with severe generalized contact
dermatitis may benefit from an intramuscular triamcinolone
injection or a prednisone taper. Wet compresses with aluminum acetate may be beneficial in the case of weeping and
itching skin. In addition, oatmeal baths are useful for moisturizing the itchy, dry skin.
Case 4—Actinic Keratosis
A 78-year-old male presents for evaluation of areas of
flaky, red areas on his forehead. He is a farmer and has
spent decades in the bright southern sun without using
any protective clothing or sunscreen. Examination of the
patient reveals an elderly white man with multiple erythematous, scaly plaques on his forehead and cheeks.
This patient has actinic (solar) keratoses. These lesions are
reddish brown, rough, scaly papules and plaques with associated telangiectasias that appear in sun-exposed body
regions (Figure 5). They are most common in older, fairskinned individuals. There is an increased risk for the develwww.turner-white.com
opment of actinic keratoses in patients who are immunosuppressed [44]. Patients with certain genetic abnormalities,
such as albinism, Bloom syndrome, xeroderma pigmentosum, and Cockayne’s syndrome are predisposed to developing actinic keratosis. The major clinical significance of
actinic keratoses is that over time they may develop into
squamous cell cancer.
Differential Diagnosis
A number of conditions can be mistaken for actinic keratoses.
The most important diagnoses not to miss include squamous
cell carcinoma and superficial basal cell carcinoma. If the
diagnosis is uncertain based on clinical examination alone, a
biopsy should be performed. Typically, skin cancers are more
firm than actinic keratoses. Squamous cell carcinomas (SCCs)
are often friable and bleed with slight trauma and, unlike the
usually asymptomatic actinic keratoses, SCCs may be painful
or itch. Basal cell carcinomas (BCCs) may present in several
different forms, but the most common type is a pearly, translucent papule with telangiectasias. BCCs are also more likely
to ulcerate and bleed than actinic keratoses. Seborrheic keratoses, which also are more common in older populations,
are benign growths that must be distinguished from actinic
keratoses. Erythema typically surrounds the base of actinic
keratoses but not seborrheic keratoses. In addition, the hyperkeratosis of seborrheic keratoses is smooth and sometimes
soft, unlike the hard, irregular hyperkeratosis of actinic keratoses. Verruca vulgaris also should be considered in the differential diagnosis of actinic keratoses.
Etiology and Pathogenesis
The chief risk factor for the development of actinic keratosis
is ultraviolet (UV) B radiation. UVA radiation alone (and in
combination with psoralen, radiographs, and radioactive isotypes) also is associated with their appearance. Due to chronic UV exposure, some patients may have a persistently red
face (chronic actinic damage) and not necessarily the presence of actinic keratoses. In actinic keratoses, the UV radiation induces thymidine dimer formation, resulting in mutations in replicating DNA [45]. Mutations of the telomerase
gene and tumor suppressor gene p53 are seen in actinic keratosis. Telomerase is involved in indicating the number of
divisions a cell can undergo. When this gene is mutated, the
cell and its descendants become immortal. The tumor suppressor gene p53 is important in cell-directed death of damaged cells. Without the product of this gene, severely damaged cells continue to proliferate. Ultimately, these mutations
lead to neoplastic transformation of the skin cells. Studies
estimate that the risk of developing squamous cell cancer
from any given actinic keratosis is between 0.075% and
0.096% per year [46]. Although the presence of a single lesion
may not result in a significant risk of cancer, patients with
Vol. 11, No. 1 January 2004 JCOM 43
THE RED FACE
years of photodamage usually present with numerous actinic
keratoses. Accordingly, squamous cell cancer would be projected to develop at a rate of 10.2% in 20 years in an individual with the average number 7.7 actinic keratoses [47].
HIV-positive patients (83% in AIDS patients) develop seborrheic dermatitis (as opposed to 1% to 3% of immunocompetent adults), and the severity of disease is correlated with
declining T cell immunity [53,54].
Treatment
Actinic keratoses are commonly treated with cryosurgery
using liquid nitrogen. The freezing that results from liquid
nitrogen therapy results in the sloughing of the photodamaged
cells of the epidermis. Cryosurgery is performed in the office
without anesthetic and results in moderate posttreatment
swelling, discomfort, and blistering. Patients with multiple
actinic keratoses may benefit from therapy with topical
agents such as fluorouracil and imiquimod. These topical
agents must be applied daily for a period of 2 to 4 weeks and
may result in significant erythema, scaling, and inflammation. Fluorouracil is available as 5%, 1%, and 0.5% fluorouracil cream formulations. Imiquimod is an immuneresponse modifier that up-regulates interferon production.
Imiquimod has been approved for the treatment of genital
warts, and recent studies have shown it to be safe and effective for the treatment of actinic keratoses [48–50].
Differential Diagnosis
Seborrheic dermatitis can be confused with other skin diseases such as atopic dermatitis, fungal infection, rosacea, or
psoriasis. If a questionable case of seborrheic dermatitis fails
to respond to standard topical therapy, another disease entity may be present. Patients with seborrhea often have additional skin diseases such as acne and rosacea. It may be prudent to refer these individuals to a dermatologist for
evaluation and possible oral isotretinoin therapy.
Case 5—Seborrheic Dermatitis
A 20-year-old man presents with complaints of itching
and redness under his beard for many years. He also
has dandruff and an itchy scalp that improves mildly with
use of zinc pyrithione shampoo. Physical examination
reveals a young man with yellow scales overlying a
greasy erythematous scalp. There also is erythema with
mild scaling in his beard.
The occurrence of greasy, red skin with overlying yellow-red
scale should suggest seborrheic dermatitis (Figure 6).
Seborrheic dermatitis is distributed in areas of active sebaceous glands; the scalp (dandruff), eyebrows, beard, forehead, nasolabial fold, glabella, retroauricular region, concha
of ear and ear canal, axilla, groin, sternum, submammary
areas, and umbilicus are commonly involved. Seborrheic
dermatitis may be first encountered in the infant as “cradle
cap” that usually remits after the first few months of infancy.
It reappears in adolescence with the onset of puberty and is
common throughout young adulthood. Seborrheic dermatitis is rare among middle-age individuals but becomes common again in later life. In adults, seborrheic dermatitis is a
chronic condition cycling between exacerbations and remissions. The winter climate tends to worsen the disease. The
effect of sunlight on seborrheic dermatitis is controversial.
One study suggests a beneficial effect of sun exposure [51],
while another reports that psoralen plus UVA light (PUVA)
therapy induces seborrheic dermatitis [52]. Up to 42% of
44 JCOM January 2004 Vol. 11, No. 1
Etiology and Pathogenesis
Malassezia yeasts are normal skin colonizers that are
thought to play a role in the development of seborrheic dermatitis. The Malassezia yeasts appear on the skin with the
onset of puberty, thriving on the concurrent increase in lipid
material. Yeast lipase activity results in the production of
arachidonic acid, a potent inflammatory mediator produced
by P. acnes in the pathogenesis of acne [55]. These theories
about the fungal role in seborrheic dermatitis are supported
by studies reporting the successful treatment of the disease
with azole drugs [56–59].
Treatment
Topical agents are the first-line treatment of seborrheic dermatitis. In adults, scalp seborrhea may be treated with overthe-counter shampoos containing selenium sulfide and zinc.
Sulfur forms hydrogen sulfide when it interacts with
keratinocytes, producing a keratolytic effect that reduces
dandruff [60]. Zinc pyrithione has keratolytic as well as antifungal activity [61]. Topical coal tar, propylene glycol,
terbinafine, and lithium succinate also have been shown to
successfully treat seborrheic dermatitis [62–67]. Corticosteroids also are beneficial, but chronic use is limited because
of the possibility of skin atrophy. Topical azoles (ketoconazole, bifonazole, miconazole) are available in numerous formulations for the treatment of seborrheic dermatitis. Other
successful topical medications include sodium sulfacetamide, ciclopirox, tacrolimus, and pimecrolimus [68–71].
If seborrheic dermatitis cannot be controlled with topical
agents, oral medications can be used. Agents such as oral
ketoconazole (200 mg daily for 4 weeks), itraconazole
(200 mg daily for 7 days), and terbinafine (250 mg daily for
4 weeks) have been used in the treatment of widespread seborrheic dermatitis [72–74]. Oral isotretinoin is useful in the
treatment of seborrhea as it reduces the production of sebum
and has anti-inflammatory properties [75].
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CLINICAL REVIEW
Case 6—Atopic Dermatitis
A 5-month-old infant is brought to the pediatric office for
an itchy red face for the past month. Upon examination,
the infant has erythematous cheeks with oozing and
crusting. Additionally, there is mild erythema in the diaper area.
Atopic dermatitis (eczema) is a disease marked by severe
pruritus and is largely a disease of infants and children. It
affects at least 10% of children at some point within their
childhood [76]. Although most children will outgrow this
disease by adulthood, some will suffer from it throughout
their life. In infantile atopic dermatitis, the head, diaper area,
and extensor surfaces exhibit a papulovesicular rash with
oozing and crusting. Chronically, the itch–scratch cycle
results in lichenified, scaling skin. Adults and children often
have this lichenified skin on the face, neck, upper chest,
hands, and antecubital and popliteal fossa (Figure 7). The
infraorbital areas are often dark and have increased skin
folds (Dennie-Morgan lines). Chronic rubbing of the eyes
may result in loss of hair in the lateral third of the eyebrow.
Perifollicular hyperkeratosis on the extensor surfaces of the
extremities (keratosis pilaris) and fish-scale–like hyperkeratosis of the arms and shins (ichthyosis vulgaris) are associated findings in patients with atopic dermatitis, especially in
patients with dark skin. The criteria for diagnosis of atopic
dermatitis are outlined in the Table.
Differential Diagnosis
Although the diagnosis of atopic dermatitis in children may
seem relatively straightforward, it is important to consider
other disease entities that may present with similar examination findings and are found in children with recurrent illnesses, developmental abnormalities, or organomegaly [77].
Young males with recurrent infections, thrombocytopenia
manifested by bleeding tendencies, and eczema should be
evaluated for Wiskott-Aldrich syndrome. Another presentation of atopic dermatitis is in Netherton syndrome, a severe
autosomal recessive skin disorder characterized by congenital erythroderma, hair-shaft abnormalities, and high levels
of immunoglobulin (Ig) E. Differential diagnoses for atopic
dermatitis are many, including contact dermatitis, seborrheic dermatitis, psoriasis, scabies, and drug reactions. It is
important to consider the complete clinical picture when
treating the patient.
Etiology and Pathogenesis
Atopic dermatitis is part of a family of diseases that also
includes allergic rhinitis, xerosis, and asthma. This constellation of disease is referred to as “atopy.” Individuals may suffer from one or more atopic diseases, and they often have
family members who have atopic dermatitis, asthma, or
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Table. Criteria for Diagnosis of Atopic Dermatitis
Major features (must have 3 or more)
Pruritus
Typical morphology and distribution
Flexural lichenification in adults
Facial and extensor involvement in infants and children
Dermatitis (chronically or chronically relapsing)
Personal or family history of atopy (asthma, allergic rhinitis,
atopic dermatitis)
Minor features (must have 3 or more)
Cataracts (anterior-subcapsular)
Cheilitis
Conjunctivitis (recurrent)
Eczema (perifollicular accentuation)
Facial pallor/facial erythema
Food intolerance
Hand dermatitis (nonallergic, irritant)
Ichthyosis
Elevated immunoglobulin E
Immediate (type 1) skin test reactivity
Cutaneous infections (Staphylococcus aureus, herpes
simplex)
Infraorbital fold (Dennie-Morgan lines)
Itching when sweating
Keratoconus
Keratosis pilaris
Nipple dermatitis
Orbital darkening
Palmar hyperlinearity
Pityriasis alba
White dermographism
Wool intolerance
Xerosis
Note: 3 or more major features plus 3 or more minor features must
be present to make a diagnosis of atopic dermatitis.
Data from Hanifin JM, Lobitz WC Jr. Newer concepts of atopic dermatitis. Arch Dermatol 1977;113:663–70; and Hanifin JM, Rajka G.
Diagnostic features of atopic dermatitis. Acta Derm Venereol
(Stockh) 1980;92(Suppl):44–47.
allergic rhinitis, which supports a strong genetic component
of atopy. In a study of siblings with atopic dermatitis, 69%
had at least one parent with atopic dermatitis [78]. Twinbased concordance studies have provided further data to
support a genetic linkage theory of atopy [79]. Multiple gene
loci have been identified as sites of polymorphisms linked to
atopic disease [80,81].
Environmental factors also are thought to be critical in the
expression of atopic dermatitis. The house dust mite (Dermatophagoides farinae) has been associated [82,83]. Numerous
studies have examined the lifetime prevalence of atopic
Vol. 11, No. 1 January 2004 JCOM 45
THE RED FACE
dermatitis, with actual percentages varying greatly between
geographic locations sampled and the time period during
which surveys were conducted [84]. It appears from these
studies that developed countries have a higher incidence of
atopy than their more rural neighbors. The “hygiene hypothesis” has been developed to explain the greater incidence of atopic dermatitis in higher socioeconomic classes
and industrialized countries [85]. This theory suggests that
the unhygienic atmosphere (early infections, larger households) in rural environments provides early exposure to
allergens that protects the individual from developing atopy.
Early exposure to pets (within the first 2 years of life) seems
to be protective against developing atopic dermatitis, although one study found a greater incidence in those with
guinea pigs [86,87]. While the complex interaction between
genetics and environment is certainly at the root of atopic
dermatitis, the causal effects of environmental factors are not
yet completely understood.
Atopic dermatitis appears to result from immune dysregulation, neural dysfunction, and a defective skin barrier.
Atopic dermatitis is associated with elevated T-lymphocyte
activation, hyperstimulatory Langerhans’ cells, abnormal
cell-mediated immunity, and overproduction of IgE [88].
Patients with atopic dermatitis have been shown to have
alterations in the levels and distribution of neuropeptides.
This abnormality is thought to contribute to the hallmark of
atopic dermatitis: itch [89,90]. Patients with atopic dermatitis
also have elevated sphingomyelin deacylase, resulting in
lower ceramide levels and a reduction in hydration of the
skin and its barrier function [91]. The weakened epidermal
layer is then more vulnerable to irritants and allergens.
Together, defective immunity and a weak epidermal barrier
in atopic dermatitis often result in superinfection with pathogens such as Staphylococcus aureus. Superinfection with the
herpes virus may result in eczema herpeticum marked by
fever, malaise, and painful, disseminated, erosive lesions.
Treatment
Treatment of atopic dermatitis is similar to that of contact
dermatitis. Foremost in therapy of atopic dermatitis is the
limitation of exposure to the exacerbating factor. These factors include excessive bathing, dry environments, harsh
detergents, and emotional stress. Often, patients with atopic
dermatitis and coexisting allergic hypersensitivity will show
improvement in their dermatitis with elimination of the
offending antigens. This may include thorough housecleaning to eliminate dust and mites or avoiding certain foods.
Antihistamines are useful in combating the itch of atopic
dermatitis. The tricyclic antidepressant doxepin is a potent
H1 blocker and also is useful in alleviating itch; however, it
should be used with caution as toxic doses can cause fatal
heart arrhythmias. In order to combat the dryness that
46 JCOM January 2004 Vol. 11, No. 1
amplifies the itch, patients should cleanse with moisturizing
soaps and oatmeal baths. Ointments and thick creams
should be applied after bathing to lock in moisture.
Topical corticosteroids are the traditional therapy of
atopic dermatitis. For mild dermatitis, low-potency topical
corticosteroids such as 1% hydrocortisone are useful. In
more severe disease, it may be necessary to use mediumpotency corticosteroids (eg, triamcinolone 0.1%). In acute
flares, high-potency steroids can be used for a short time but
should not be used on the face. In the most severe flares, a
brief, systemic prednisone taper may rarely be indicated
along with the institution of aggressive topical therapy.
However, it is best to avoid systemic steroids if possible as
many patients flare and develop more severe dermatitis [92].
Many patients with severe dermatitis may be secondarily
infected by S. aureus. A short course of antistaphylococcal
antibiotic (cephalexin) may be indicated if infection is suspected or if patients are proven nasal carriers of S. aureus.
The patient with severe atopic dermatitis unresponsive to
conventional medications may be referred to a dermatologist for treatment with other drugs or UV light therapy.
PUVA therapy and UVA/UVB phototherapy have been
used for treating severe atopic dermatitis. Topical or oral
cyclosporine is an effective therapy for severe atopic dermatitis [93,94]. Oral cyclosporine is limited by the need to
measure blood pressure and serum creatinine every 2 weeks
for 3 months and then monthly.
Topical tacrolimus is an effective and safe alternative to corticosteroids for the treatment of atopic dermatitis in both children and adults [95–97]. Tacrolimus is an immunomodulator
whose advantage over corticosteroids is that it does not cause
skin atrophy, a useful property in the treatment of facial dermatitis. Initially, the patient may experience some burning,
stinging, or erythema with the application of tacrolimus; however, these adverse effects resolve over time. Topical tacrolimus
is prepared in 0.1% and 0.03% concentrations. Pimecrolimus,
available as 1% cream, is an alternative immunomodulator
approved by the FDA for atopic dermatitis.
Less Common Red Face Diagnoses
Tinea faciei, although not very common and often misdiagnosed, presents as an easily treatable cause of red face. The
lesions are scaly, erythematous, annular plaques that may
have pustules along the border (Figure 8). Fungal culture or
potassium hydroxide examination confirms the diagnosis,
and topical antifungals yield successful results.
Ulerythema ophryogenes (keratoses pilaris atrophicans
faciei) is a chronic condition that manifests shortly after birth
and is characterized by follicular papules with surrounding
erythematous halos (Figure 9). Initially, the disorder targets
the lateral aspects of the eyebrows, but progression to the
cheeks and forehead is not uncommon. Gradual loss of the
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CLINICAL REVIEW
eyebrow hair is seen, which may eventually involve the
entire eyebrow. Keratosis pilaris of the extensor aspects of
the arms is often seen, and an association with atopic dermatitis has been reported [98]. In addition, several congenital abnormalities (ie, Noonan’s syndrome and Cornelia de
Lange’s syndrome, Rubinstein—Taybi syndrome) have been
linked [99–102].
The systemic diseases lupus erythematosus and dermatomyositis can present with a red face. Dermatomyositis classically presents on the face with periorbital confluent, macular,
violaceous (heliotrope) erythema, although a more generalized “red face” may be seen (Figure 10). Other hallmark cutaneous features include violaceous papules (Gottron’s papules) and symmetric confluent macular violaceous erythema
(Gottron’s sign) overlying the interphalangeal and/or metacarpophalangeal joints, symmetric confluent macular violaceous erythema overlying the dorsal aspect of the fingers up
to the arms and neck (shawl sign) and anterior neck and
upper chest (V sign), periungual telangiectasias, and bilaterally symmetric confluent hyperkeratosis along the ulnar aspect of the thumb and radial aspect of the fingers (mechanic’s
hand lesion) [103]. Although skin disease is usually the first
sign of dermatomyositis, muscle weakness (proximal myositis) soon follows, and other organ systems (ie, cardiac, pulmonary, gastrointestinal) also may be involved.
Lupus erythematosus–specific skin disease can be divided into acute cutaneous lupus erythematosus (ACLE), subacute cutaneous lupus erythematosus (SCLE), and chronic
cutaneous lupus erythematosus (CCLE). ACLE typically presents with confluent, symmetric, erythema over the malar
eminences and bridge of the nose, sparing the nasolabial
folds (butterfly rash) (Figure 11a). Erythematous macules
and/or papules that evolve into hyperkeratotic papulosquamous or annular/polycyclic plaques, predominantly in sunexposed areas, generally occur with SCLE (Figure 11b). The
typical presentation in CCLE includes sharply demarcated,
coin-shaped (discoid) erythematous plaques with prominent, adherent scale and central atrophy primarily affecting
the face, scalp, ears, V area of the neck, and extensor aspects
of the arms (Figure 11c) [104]. The risk of systemic lupus erythematosus is greatest with ACLE (72%) and least with CCLE
(14%) [105]. Systemic manifestations may involve renal, cardiac, pulmonary, neurologic, hematologic, immunologic, and
musculoskeletal systems. In either of these systemic disorders involving the skin, the role of a dermatologist is beneficial and referral should be made promptly once the diagnosis is suspected.
Corresponding author: Steven R. Feldman, MD, PhD, Professor,
Departments of Dermatology and Pathology, Wake Forest University
School of Medicine, Medical Center Blvd., Winston-Salem, NC 27157,
[email protected]
www.turner-white.com
Financial disclosures: None.
Author contributions: conception and design, KAC, SRF; drafting of
the article, SB, LR; critical revision of the article for important intellectual content, KAC, GFG, SRF; collection and assembly of data, SB,
LR, KAC.
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