Dandruff is itchy and sometimes scarred.

Dandruff is often scarred. Most of them are caused by fatty dermatitis, which belongs to a chronic inflammatory skin disease. Patients can generally use sulfur lotion or salicylic acid lotion for external use to inhibit bacteria and remove dandruff. If necessary, consider using small doses of glucocorticoids. Pay attention to local hygiene, but wash your hair frequently.