Scab-like dandruff on the scalp may be caused by fungal infection of ringworm, seborrheic dermatitis or psoriasis. 1. Tinea capitis caused by fungus, need to check whether the infection is fungal before treatment, when the fungal infection is positive, you can take oral itraconazole capsules, terbinafine hydrochloride tablets, topical terbinafine hydrochloride gel and other drugs. 2. Seborrheic dermatitis, seborrheic dermatitis is a kind of inflammatory skin disease caused by sebum secretion. Happens in the head and face, treatment attention to clean head and face sebum, such as topical selenium disulfide, ketoconazole lotion. 3. Psoriasis, commonly known as psoriasis, can occur on the whole body skin. The cause of the disease is not clear, may be related to genetic, immune and other factors, is a chronic inflammatory skin disease. Therapeutic drugs include softeners keratin promoters (e.g. salicylic acid), dithranol, tar, topical corticosteroids, vitamin D3 and others. The treatment of dandruff like scabs on the scalp should be directed to the cause of the condition after clarifying the cause with the help of a physician. All medications should be used in accordance with the doctor’s instructions.