Itchy scalp after swimming may be seborrheic dermatitis, allergic dermatitis, tinea capitis and other diseases, you can follow the doctor’s instructions through oral medication, applying drugs for treatment. 1. Seborrheic dermatitis: If the patient does not do a good job of cleaning after swimming, it is easy to lead to the head of the skin by bacterial infection caused by seborrheic dermatitis, resulting in the patient’s head of the skin appeared greasy scales and accompanied by itching. Selenium disulfide lotion can be used externally, oral itraconazole capsules and other drugs, can play an antibacterial effect. 2. Allergic dermatitis: If the patient is allergic to swimming pool water, it is easy to cause allergic reaction of the patient’s skin, resulting in itching. Local application of compound dexamethasone acetate cream and other drugs can be treated, and patients with serious conditions can take oral chlorpheniramine maleate tablets, loratadine tablets and other drugs. 3. Tinea capitis: Tinea capitis is usually caused by dermatophyte infection, if the patient himself suffers from tinea capitis, after swimming due to bacterial infection will aggravate the patient’s condition, leading to the patient’s scalp itchy as well as painful symptoms. You can apply compound ketoconazole ointment, miconazole nitrate cream and other medications under the guidance of a doctor. After swimming scalp itchy patients need to consult a doctor to check, clear the cause of the disease to follow the doctor’s instructions for standardized treatment, do not self-medication.