Hair seborrheic dermatitis dandruff needs to identify the cause, which may be physiological, or may be caused by fungal infections and sebum secretion. Its treatment needs to be symptomatic according to the cause, usually including general treatment and drug treatment. 1. Physiological reasons: It may be caused by physiological reasons, including unhealthy eating habits, excessive smoking and drinking, endocrine disorders caused by frequent late nights, or not paying attention to the scalp area cleanliness and hygiene. To maintain good habits, pay attention to rest, quit smoking and drinking, pay attention to scalp hygiene. 2. Fungal infection: fungal infection is also caused by seborrheic dermatitis dandruff, fungal infection leads to damage to the scalp follicles, dandruff phenomenon. You can use ketoconazole lotion, selenium disulfide lotion, compound sulfur lotion to wash your hair under the guidance of your doctor, and you can also take oral antifungal drug itraconazole for treatment. 3. Excessive sebum secretion: may be due to the scalp sebum secretion, secretion stimulation to the scalp, resulting in scalp itching dandruff increase, you can use oral medication under the guidance of the doctor for treatment, generally use loratadine, imipramine, orotadine and other oral medications. Need to pay attention to, hair seborrheic dermatitis to timely consultation and treatment, clear cause, follow the doctor’s instructions for medication and treatment mode, not blindly use drugs.