Very large flakes of dandruff on the head may be due to ringworm of the head, seborrheic dermatitis, psoriasis and other factors. It can be relieved by the use of antifungal drugs, glucocorticoids, carbotriol and other drugs. 1. Tinea capitis: This is a common skin disease of the hair and scalp mainly due to bacterial infection of the skin, which causes hair loss like accompanied by scaling and breakage. After diagnosis, you can cooperate with the doctor’s choice, topical amorolfine ointment and other drugs, or use terbinafine, itraconazole, fluconazole and other oral antifungal drug treatment to improve the symptoms. 2. Seborrheic dermatitis: considered to be due to genetic factors, Marathonella infection and other factors, will cause the scalp area to appear yellowish-red plaques, the top of the attached greasy scales, accompanied by itchy symptoms, can be used externally ketoconazole, econazole, clotrimazole and other drugs treatment. Use selenium disulfide lotion to wash hair, itching serious patients oral loratadine and other drugs. 3. Psoriasis: also commonly known as “psoriasis”, mainly due to genetic and immune factors, so there will be a large dandruff on the head, after diagnosis, you can cooperate with the doctor to choose prednisone, betamethasone and other glucocorticosteroid drugs, or cardapolitriol and other drug therapy. Patients with large dandruff symptoms on the head, if the symptoms are not relieved after lifestyle modification, should consult a doctor in time to clarify the cause of the disease, under the guidance of the doctor for standardized treatment.