Allergic dermatitis on the head can be treated with topical medications, oral medications and daily care. 1. Topical medications: Topical glucocorticosteroid preparations such as Denadyl cream can be used; when combined with fungal infections, Trimethoprim cream can be used; when combined with bacterial infections, fusidic acid cream can be used externally. 2. Oral medication: If the itching is obvious, you can take antihistamines such as loratadine, ebastine, etc., which have the effect of anti-allergy and itching; now if the allergy is serious, there are obvious pimples, erythema, blisters and oozing, you can also take oral prednisone acetate. 3. Daily care: weekdays should pay attention to try not to contact with allergy-causing substances, keep the scalp hygiene and cleanliness, when the itching symptoms, should avoid scratching, otherwise it is easy to cause skin damage, and at the same time, pay attention to light diet, try to eat as little as possible spicy and other stimulating food. It is recommended that patients go to the hospital, follow the doctor’s instructions to standardize the treatment, do not blindly deal with their own, so as to avoid adverse reactions.