Itchy scalp after washing the scalp is often considered with ringworm, folliculitis, seborrheic dermatitis and contact dermatitis, etc., can follow the doctor’s instructions to use the appropriate medication, such as antifungal, antibiotics, glucocorticosteroid drugs. 1. Tinea capitis: mainly related to fungal infection, can use clotrimazole ointment, bifonazole cream and other local application, can also use ketoconazole shampoo products, etc. for treatment. Joint oral itraconazole, terbinafine and other drugs. At the same time, you need to shave the hair, pay attention to the patient’s personal hygiene, avoid sharing towels, hats and other personal items. 2. Folliculitis: the above symptoms can also occur, can use mupirocin ointment, clindamycin and other drugs symptomatic treatment. 3. Seborrheic dermatitis: commonly used medications include terbinafine hydrochloride cream, tacrolimus ointment application, selenium sulfide lotion shampoo, if itching is obvious, you can take oral antihistamines such as loratadine and other drugs. 4. Contact dermatitis: often caused by allergy to shampoo, this time you need to replace the shampoo in time, followed by anti-allergy treatment, such as topical hormone ointment mometasone furoate, itching agent glycerine lotion, oral antihistamine such as loratadine, prednisone and other hormonal drugs. The above situation, it is recommended to go to the hospital in a timely manner, to clarify the cause of the disease, symptomatic treatment, medication should be used in accordance with medical advice.