The pain in the head behind the ear is mainly due to the following clinical conditions: 1. Herpes zoster in the ear, herpes virus invasion of the trigeminal nerve can cause pain in the head behind the ear, mainly neuropathic pain, induced by viral invasion, which can be treated symptomatically with painkillers, some patients have relief, and can also be treated with acupuncture. 2. Pain in the mastoid area behind the ear induced by acute middle ear mastoiditis, in heavy cases 3. Painful sensation in the junction area behind the ear and head caused by acute otitis media, acute otitis externa, mumps and other inflammatory diseases around the ear can also lead to lymph nodes enlargement and lymphadenitis. 4. Ear neuralgia, where there is no obvious inflammatory lesion in other parts of the ear during clinical examination, but the patient shows The pain that appears suddenly and stops suddenly may be related to factors such as the patient staying up all night, getting on fire or eating spicy and stimulating, etc. Oral carbamazepine treatment can be carried out in the early clinical stage, and local closure treatment can also be done if drug treatment is not effective.