White flakes of dry dandruff on the scalp may be a physiological phenomenon that does not require treatment, but can also be seen in seborrheic dermatitis, scalp psoriasis, ringworm and other pathologic conditions, which need to be clarified after the cause of the use of medication under the guidance of a doctor. 1. Under normal circumstances, human scalp cells due to continuous metabolism can produce a small amount of dandruff, white flakes of dry flakes, attached to the scalp and hair surface. This is a normal physiological phenomenon, no harm to the human body, generally no need for treatment. 2. Pathological factors lead to patients with white flakes of dry dandruff on the scalp, the need for timely use of medication. (1) seborrheic dermatitis: can lead to white patches of dry flakes on the scalp, and can be accompanied by itching, hair loss and other symptoms. Vitamin B6, vitamin B2, tanshinone capsules can be given orally, and topical ketoconazole lotion, tacrolimus ointment and other treatments. (2) Scalp psoriasis: the patient’s scalp may appear white patches of dry flakes, can be prescribed oral vitamin A acid, methotrexate and other drugs, topical glucocorticosteroids, vitamin D ₃ analogues such as caspofungin, osteotriol and other drugs. (3) Tinea capitis: a fungal infectious disease of the scalp, which can lead to patients with white patches of dry flakes on the scalp, with obvious itching and hair loss. Need to be treated by using antifungal drugs, such as oral itraconazole, terbinafine, external ketoconazole shampoo shampoo and so on. There are white patches of dry flakes on the scalp, and those with severe symptoms should seek medical attention to clarify the cause of the disease and then target treatment. The pathology of this symptom is caused by many factors, the use of drugs should follow the doctor’s instructions, not blindly use their own drugs, in order to prevent aggravation of the symptoms.