Some people are prone to a large amount of dandruff, accompanied by oiliness and itching of the scalp, which is then considered seborrheic dermatitis, mainly caused by the secretion of a large amount of oil by the sebaceous glands. Therefore, in terms of treatment, treatment can be carried out according to the degree of the condition, as follows: 1. If mild dandruff accompanied by mild itching occurs, then you can take vitamin B6 orally, and apply bifenazole cream and urea vitamin E cream mixed with topical medication. 2. If a large amount of dandruff accompanied by severe itching occurs, then you can take terbinafine hydrochloride tablets orally, and at the same time, you can apply topical medication. 3. If the dandruff is increasing, accompanied by liquid exudation, and the itching is getting more and more serious, you can take oral isotretinoin soft capsule under the guidance of dermatologist, and also take oral moistening and anti-itching capsule. For topical application, a mixture of tretinoin econazole ointment and skin cream can be applied topically. During the treatment period, you need to abstain from spicy and stimulating food, abstain from alcohol, reduce the intake of fried and sweet food, pay attention to rest and reduce staying up late.