Most of the dandruff on the top of the head is a symptom formed by seborrheic dermatitis. As seborrheic dermatitis appears on the scalp, the inflammation will lead to the proliferation of the keratin layer of the skin, accompanied by shedding, and the phenomenon of increased dandruff on the top of the head may occur, and some patients may have varying degrees of itching, and some may even have oozing reactions, and some may even have pain or edema, etc. For increased dandruff on the head, medication is usually required. Usually oral antihistamines can be taken, and topical medications can usually be applied topically with coal tar lotion, or ketoconazole shampoo.