Dandruff (Seborrhea) »
What is dandruff (seborrhea)?
It is a common form of skin eczema that occurs in parts of the body with high
oil (sebum) production. Body areas that are commonly affected include the scalp,
ears, face, chest, and folds of skin, such as the underarms or the skin below
breasts or overhanging abdominal folds. The cause of seborrhea is unknown,
although a yeast that often lives on the skin, Malassezia furfur, may play a
role.
One common manifestation of seborrhea that affects the scalp is dandruff. Scalp
seborrhea can also present as thick, flaky, localized patches of scale. On the
face, seborrhea produces reddish-brown, dry-looking, or thick, greasy scales on
the eyebrows, sides of the nose, and behind the ears. Reddish, scaly patches may
also appear in the folds of skin mentioned above. Although skin affected by
seborrhea may feel "dry," moisturizing only makes them redder.
Scalp seborrhea and dandruff do not cause perm...
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