What is seborrhea?

Seborrhea is a common skin condition that causes red, scaly, and oily skin. It is caused by overproduction of sebum, an oily substance that helps to keep skin healthy. Seborrhea can affect the face, scalp, chest, and back. The most common form of seborrhea is dandruff, which is characterized by white or yellow flakes of skin on the scalp. Seborrhea can also cause itching, burning, and irritation. It can be triggered by a number of factors, including stress, hormonal changes, and certain medical conditions.