Only one side of the temple swelling pain may be migraine, cluster headache, herpes zoster, superficial temporal arteritis and other causes. 1. Migraine headaches usually cause throbbing pain and swelling on one side of the temple, and it is recommended to use flunarizine and other medications under the guidance of a doctor to relieve the pain. 2. Cluster headache attacks are usually more serious, manifested as swelling and pain around the eyes and on one side of the temple, usually using pure oxygen inhalation and giving ergotamine caffeine to improve the headache. 3. Herpes zoster: It is often a viral infection and requires antiviral treatment. In severe cases, medications such as pregabalin and gabapentin may be used under the supervision of a doctor to provide relief. 4. Inflammation of the temporal artery may also cause pain and swelling on one temple. You should go to the hospital in time, symptomatic treatment, medication follow the doctor’s instructions.