Itchy scalp caused by many reasons: to target specific causes for treatment: 1, seborrheic dermatitis caused by itching: you can use selenium disulfide shampoo to wash your hair; 2, scalp psoriasis caused by itching: you can take oral silver granules, local topical zinc pyrithione aerosol for treatment; 3, head lice caused by itching: you can use 50% of the topical tincture of Bacopa monnieri for treatment; 4, patients with furfuraceous scalp: you can use the topical compound Ketoconazole hair lotion shampoo for treatment; 5, poorer hygiene: itching caused by long-term unwashed hair, it is recommended to pay attention to hygiene, often wash the hair; 6, suffering from other diseases: such as diabetes mellitus, hepatic and renal insufficiency, malignant tumors, etc., to its cause for treatment.