Large pieces of dandruff are considered to be related to improper care, seborrheic dermatitis, ringworm of the head and other factors, which can be removed by daily care, topical medication and oral medication. 1. Improper care: If patients do not pay attention to head hygiene in general, it may cause the scalp to secrete a lot of oil, thus forming large dandruff. You need to use mild and non-irritating shampoo to wash your scalp frequently, so that you can clean the oil in the scalp, thus relieving the symptom of chunky dandruff. 2. seborrheic dermatitis: this is caused by malassezia infection, patients can follow the doctor’s instructions to apply local itraconazole, ketoconazole and other drugs to the scalp for cleaning, can achieve antibacterial, dandruff effect. 3. Tinea capitis: Tinea capitis is usually caused by dermatophytes, such as Trichophyton rubrum and Trichophyton rubrum, etc. Patients can follow the doctor’s instructions orally ashwagandha, terbinafine and other medications, which have the effect of inhibiting the scalp tinea capitis. It is recommended that patients consult a doctor in a timely manner, follow the doctor’s instructions for medication, to avoid blindly using their own medication.