There is a large dandruff, and began to lose hair may be due to ringworm or seborrheic dermatitis caused by the need to clarify the cause of the disease as soon as possible, according to the cause of the appropriate drug treatment and life management. 1. Tinea capitis: Due to fungal infection of the scalp. Performance for scalp itching, large flakes, hair loss and breakage. Clearly for ringworm of the head after the need for antifungal treatment. You can follow the doctor’s instructions to use ketoconazole lotion, topical application of terbinafine cream, etc., and can be combined with oral itraconazole, terbinafine. Daily attention should be paid to the pillowcase, towels and other thoroughly sterilized, to keep the scalp clean. 2. Seborrheic dermatitis: Manifested as thinning hair, scalp oil, Malassezia breeding, dandruff increase. Can follow the doctor’s instructions with antibacterial, anti-inflammatory, keratin exfoliation effect of selenium disulfide lotion, salicylic acid. If the skin lesions are heavy, mometasone furoate cream and tacrolimus ointment can be used for a short period of time, and oral B vitamins can also be taken. For seborrheic dermatitis, daily attention to diet light, avoid eating greasy, high sugar food. Ensure adequate sleep, moderate exercise, and avoid excessive cleaning of the head. Dandruff large began to lose hair, may also be caused by other diseases, once this symptom should be timely medical care, clear cause of the disease, follow the doctor’s prescription medication, do not blindly use their own medication, in order to prevent aggravation of the condition.