DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Seborrhoeic dermatitis of the scalp of a 7-year- old girl. This condition causes an itchy scaly rash that can occur on the face, chest and back, as well as the scalp. The yellow, moist dead skin scales (centre right) are due to the overproduction of sebum, the secretion of the sebaceous glands that reaches the skin surface through small ducts that lead into the hair follicles. Treatments include anti-dandruff shampoos or corticosteroid creams.
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