DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Dandruff in seborrheic dermatitis. Close-up of the scalp of a 74-year-old female patient with dandruff caused by seborrheic dermatitis. Seborrheic dermatitis is a chronic inflammation of the skin (dermatitis) that typically causes flaky itchy and red skin. It's cause is unknown.
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