DERMATITIS, SEBORRHEIC |
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General Information
DEFINITION--A skin condition characterized by greasy or dry, white scales on the skin of the scalp (dandruff), eyebrows, forehead, face, folds around the nose, behind ears, in the external ear canal, or on skin of the trunk, especially over the breastbone or in skin folds. It is not contagious. It is especially of concern to athletes because extra heat and sweat can aggravate skin irritation and trigger the production of more scales.
SIGNS & SYMPTOMSFlaking, white scales over reddish patches on the skin and scalp. Scales anchor to hair shafts. They may itch, but they are usually painless unless complicated by infection.
CAUSES & RISK FACTORS
Sweating.
Stress.
Hot, humid weather or cold, dry weather.
Infrequent shampoos.
Oily skin.
Other disorders, such as acne rosacea, acne or psoriasis.
Obesity.
Parkinson's disease.
Use of drying lotions that contain alcohol.
HOW TO PREVENTCannot be prevented. To minimize severity or frequency of flare-ups:
Shampoo frequently.
Dry skin folds thoroughly after bathing.
Wear loose, ventilating clothing.
WHAT TO EXPECT
DIAGNOSTIC MEASURES
Your own observation of symptoms.
Medical history and physical exam by a doctor.
SURGERYNot necessary nor useful for this disorder.
NORMAL COURSE OF ILLNESSThis is a chronic condition, but it is often characterized by long periods of inactivity. During active phases, symptoms can be controlled with treatment.
POSSIBLE COMPLICATIONS
Embarrassment and social discomfort.
Secondary bacterial infection in affected areas.
HOW TO TREAT
NOTE -- Follow your doctor's instructions. These instructions are supplemental.
MEDICAL TREATMENTHome treatment is sufficient unless infection develops.
HOME TREATMENT
Shampoo vigorously and as often as once a day. The shampoo you use is not as important as the way you scrub your scalp. Loosen scales with your fingernails while shampooing, and scrub at least 5 minutes.
Lubricate skin before drying off after baths and showers.
MEDICATION
For minor dandruff, you may use non-prescription dandruff shampoos and lubricating skin lotion.
For severe problems, your doctor may prescribe:
Shampoos that contain coal tar or scalp creams that contain cortisone. To apply medication to the scalp, part the hair a few strands at a time, and rub the ointment or lotion vigorously into the scalp.
Topical corticosteroids for other affected parts.
ACTIVITYNo restrictions. Outdoor activities in summer may help.
DIETNo special diet. Avoid foods that seem to worsen your condition.
CALL YOUR DOCTOR IF
You have symptoms of seborrheic dermatitis that don't respond to self-care.
Patches of seborrheic dermatitis ooze, form crusts or drain pus. These signs may indicate infection.
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