Ms. Wang, 32, came to the dermatology office, pointing to a patch of red spots on her face, itching and peeling, and asked the doctor to treat her allergies, saying she had eaten a lot of meat and drunk a lot of wine in the past few days. The doctor told her, “This is not allergy, this is seborrheic dermatitis!” Each family good wine and meat, happy, night and day, some friends recently began to appear some skin problems, the above-mentioned Ms. Wang is the victim of “seborrheic dermatitis”, then we come together to understand seborrheic dermatitis. A. What are the common manifestations of seborrheic dermatitis? The first thing you need to do is to get a good idea of what you are getting into. In some patients, the lesions will slowly expand and become large patches with clear borders, and in some patients, the lesions even involve most of the scalp, and in severe cases, there will be greasy scabs with a fishy odor. Facial erythema: Facial erythema usually spreads from scalp disease, often occurs in the forehead, eyelids, nasolabial folds, erythema is covered with a layer of white scales, or yellow greasy thick scabs, some patients are also prone to similar symptoms behind the ears. Other areas: the chest, between the shoulder blades, armpits, vulva, groin, under the breast and around the umbilicus may also appear the above-mentioned erythema covered with greasy scaling changes. How is seborrheic dermatitis caused? The cause of the disease is not clear, seborrheic dermatitis is a disease of sebum secretion, overflow abnormalities, may be related to Malassezia furfur. The individual susceptible to seborrheic dermatitis can be triggered by fatigue, emotional stress or infection. During the New Year, people consume more fat, wine, spicy and stimulating food and have irregular life and rest, so there will be more patients suffering from seborrheic dermatitis recently. Third, how should I treat and prevent it? The doctor will give antihistamines, vitamin B complex and other oral medications for treatment according to the severity of the patient’s condition, and treat the patient’s symptoms symptomatically. About prevention: Seborrheic dermatitis is a disease prone to recurrence, therefore, it is recommended that you live a regular life, eat less fatty and spicy stimulating foods, wash your hair with less overheated water and alkaline soap, avoid scratching as much as possible, and take vitamin B2, vitamin B6 and vitamin B complex supplements, etc.