(1) Acute seborrheic alopecia
Symptoms include: increased scalp oiliness, itching, dandruff or papules, hair falling off in a short time or even falling off completely, and scalp may have small papules, which mostly occur in adolescence, more common in men, and easy to recur after treatment.
(2) Chronic seborrheic alopecia
Symptoms are: the scalp is greasy and shiny, oily, with a lot of gray bran-like dandruff, dry hair, lack of luster and severe itching. Men's hair slowly falls off from both sides of the forehead and the top of the head, and baldness is formed after several years or more, but it is not easy to form total baldness. The disease mostly occurs in young men and women, especially men, while women's hair is sparse and dry, and the hair is slowly scattered, exposing the scalp.