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About Seborrheic dermatitis

   

Seborrheic dermatitis is a common skin disorder that can be easily treated. This condition is a red, scaly, itchy rash most commonly seen on the scalp, sides of the nose, eyebrows, eyelids, skin behind the ears, and middle of the chest. Other areas, such as the navel (belly button), buttocks, skin folds under the arms, axillary regions, breasts, and groin, may also be involved.

Seborrheic dermatitis most often occurs in babies younger than 3 months of age and in adults from 30 to 60 years of age. In adults, it's more common in men than in women.

The exact cause isn't known. The cause may be different in infants and adults. Seborrheic dermatitis may be related to hormones, because the disorder often appears in infancy and disappears before puberty. Or the cause might be a fungus, called Pityrosporum ovale. This organism is normally present on the skin in small numbers, but sometimes its numbers increase, resulting in skin problems.

Seborrheic dermatitis has also been linked to neurologic disorders such as Parkinson's disease and epilepsy. The reason for this relationship isn't known.