Dandruff may be associated with ringworm, seborrheic dermatitis, and psoriasis, etc. For the cause of the disease, anti-fungal, anti-sebaceous secretion and glucocorticoid, immunomodulator treatment can alleviate the symptoms of increased dandruff. 1. Tinea capitis: it is a disease caused by the infection of ringworm on the head skin, the clinical symptoms are mainly manifested as increased dandruff, scalp itching and hair loss, hair breakage, etc. In the treatment, you can choose ketoconazole shampoo to wash your hair, and you can also take fluconazole dispersible tablets orally for treatment. 2. Seborrheic dermatitis: it is an inflammatory disease caused by exuberant secretion of sebaceous glands, which can be manifested as increased dandruff and greasy scabs, etc. The symptoms of increased dandruff can be improved through the use of selenium disulphide lotion and other drugs to inhibit sebum secretion. 3. Psoriasis: it is a chronic inflammatory skin disease, its onset is related to genetics, immune abnormalities and environmental factors, through the administration of glucocorticoid drugs (Hasinide solution), calcium-modulating phosphatase inhibitors (tacrolimus), vitamin D3 derivatives (carbotriol) and other drugs, can improve the symptoms of the disease. Due to the different causes of the disease and different treatments, the specific situation requires an interview with a doctor, and medication should be prescribed by a doctor.