The vein pain behind the ear may be caused by life habits, inflammation or trigeminal neuralgia behind the ear, lymphadenitis behind the ear and other reasons. 1. As there is a large nerve behind the ear, if you stay up late for a long time and get on fire, it may lead to pain in the nerve behind the ear. It is recommended that you can take oral carbamazepine under the guidance of a doctor to relieve the symptoms, and at the same time, pay attention to your own dietary habits and pay attention to rest. 2. Inflammation. If you suffer from otitis externa, acute otitis media, inflammation of the mastoid process of the middle ear, it may cause pain behind the ear, and it is recommended to treat the inflammation. 3. Post-auricular lymphadenitis: swollen and inflamed lymph nodes behind the ear cause pain behind the ear. Treatment apply antibiotics such as ceftriaxone, anti-infective treatment. Drugs must be applied under the guidance of a doctor. Pulse pain behind the ear should go to the hospital in time, clear diagnosis and then treatment.