Seborrheic Dermatitis: Spreads To The Face & Beyond
Written by Megan Kinder [email protected]
Signs and Symptoms of Seborrheic Dermatitis
Signs and symptoms can vary from day to day and include:
Oily, waxy appearance to the skin
Flaking skin with scale that ranges in color from white to yellowish brown
Reddish, somewhat swollen patches of skin — often resembling atopic dermatitis (another type of eczema) or psoriasis
Patches can appear on these areas of the body: scalp, hairline, upper lip, beneath the eyebrows, inside and behind the ears, eyelids, creases near the mouth, around the nose, armpits, groin, navel, buttocks, underneath the breasts, and upper back. These areas contain oil-producing glands called sebaceous glands.
Skin may itch constantly. Itching and burning are most common when a skin infection develops. When the skin is infected, skin becomes extremely inflamed and itchy.
If severe, widespread patches
Who Can be Affected by Seborrheic Dermatitis?
Develops in all races
Tends to begin during infancy (newborn to 6 months), puberty, or between 40 and 70 years of age. After 6 months of age, the condition rarely appears before puberty. When seborrheic dermatitis begins during infancy, it usually clears by 9 to 12 months of age.
While the exact cause is not known, researchers believe that a number of factors interact to cause seborrheic dermatitis. These factors include the genes we inherit, yeast that normally live on human skin, stress, climate, and overall general health.
The following tend to increase the likelihood of developing seborrheic dermatitis:
A family history of eczema
Having oily skin or hair
Cold, dry climate
Gender: Males tend to develop more often and have more severe cases
Injury to the skin, such as an abrasion or scratch
Using lotions or other topicals that contain alcohol
Having acne, rosacea, psoriasis, or blepharitis (inflammation of the eyelid)
Some medical conditions (Parkinson’s disease, human immunodeficiency virus (HIV), and recovering from a stroke or heart attack) increases the risk significantly. Estimates indicate that as many as 90% of HIV-infected individuals develop seborrheic dermatitis.
Taking certain medications, including interferon-α, lithium, and psoralen, significantly increases one’s risk.
Infants. The condition usually clears on its own over a period of weeks or months but may return at puberty.
Adults. Seborrheic dermatitis is often chronic, flaring periodically and without warning.
Visual examination of the skin and complete medical history. These are usually all that is needed to diagnose seborrheic dermatitis. It is best to see a dermatologist because seborrheic dermatitis can resemble many other skin conditions, including atopic dermatitis, psoriasis, and rosacea. In infants, seborrheic dermatitis may develop only in the diaper area and be mistaken for diaper rash. Effective treatment requires an accurate diagnosis.
Skin biopsy or other laboratory testing. This may be necessary to eliminate the possibility of another medical condition.
Specific Treatment Towards Individuals
While seborrheic dermatitis cannot be cured, most cases respond quickly to proper treatment. The goals of treatment are to loosen and remove scales and crusts, prevent skin infections, as well as reduce the inflammation and itch.
Treatment varies by age and area of the body to be treated:
Infants (scalp). Cradle cap, which only develops in infants, can usually be controlled by shampooing more frequently with a baby shampoo and by softly brushing away the scales. A dermatologist also may prescribe a mild corticosteroid or anti-fungal medication.
Infants (beyond the scalp). When the condition spreads beyond the scalp in infants, dermatologists usually prescribe a topical medication, such as a mild corticosteroid or anti-fungal cream.
Adolescents and adults (scalp). African-American patients often get relief by shampooing once a week with a product recommended by a dermatologist.
Caucasian patients with seborrheic dermatitis may find that shampooing more frequently than usual and leaving the lather on the scalp for a longer time clears the condition. Shampoos specially formulated for dandruff relief are often effective. Sometimes getting results requires alternating dandruff shampoos so that a different shampoo is used every few days. A dermatologist can explain this process and recommend which shampoos a patient should use and when. To effectively treat the scalp, a dermatologist also may prescribe a topical corticosteroid or antifungal medication.
A word of caution: While tar shampoos can effectively reduce skin cell buildup, they also tend to discolor blond and gray hair.
Adolescents and adults (beyond the scalp). Medicated dandruff shampoos often provide relief beyond the scalp. A dermatologist can explain how to use shampoo to treat other affected areas. A topical corticosteroid or antifungal medication also may be prescribed. A severe case may require the addition of an oral antifungal medication or phototherapy.
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