A toothache and headache that hurts half of your head can be caused by pulpitis, inflammation of the wisdom teeth, and other causes. 1. Pulpitis: pulpitis is due to dental caries and other dental problems gradually spread to the pulp, so that the bacteria invade the gums inside the nerve, resulting in an inflammatory reaction caused by toothache, due to the teeth and facial nerves are connected, the pain can be involved in the facial nerves, there will be a tooth on the side of the phenomenon of half a head ache, the pain is characterized by spontaneous paroxysmal pain. 2. Wisdom teeth inflammation: there will be a toothache phenomenon, the severe cases can lead to the affected side of the posterior teeth area swelling, pain is obvious, can be extended to the ear, temporomandibular joints, face, thus appearing toothache and headache half of the head ache, need to relieve pain in a timely manner, to eliminate the inflammation, you can take amoxicillin, tinidazole and other anti-inflammatory drugs, it is recommended that wisdom teeth extraction surgery to alleviate the symptoms. Toothache headache half headache patients, it is recommended to go to the regular dental hospital in a timely manner, after clarifying the cause of the disease, according to the doctor’s diagnosis for standardized treatment. The use of drugs under the guidance of the physician.