The causes of dandruff include ringworm, fungal infection, psoriasis, asbestosis, seborrheic dermatitis, etc. Different causes need to be treated in different ways, and the specific treatment is as follows: 1. psoriasis: also known as psoriasis, you can use hormone cream or Darex ointment locally; 2. seborrheic dermatitis: you need to use antifungal cream, and you can use ketoconazole lotion or wash your hair with herbal medicine at the same time, which also Can play a better effect of sebum removal. Some people use sulfur soap to wash their hair, and it is also better than the effect, but after washing it may be locally dry, so you should use emollient and moisturizing drugs or skin care products appropriately; 3, ringworm: head fungal infection caused by not only local antifungal drugs, but also may have to use antifungal drugs systemically, commonly used drugs including fluconazole, itraconazole, etc. These drugs must be used under the guidance of a doctor.