The causes of half headache are many, mostly seen in dermatoneuritis, migraine, tension headache, intracranial organic lesions, etc., to identify the cause of the disease, symptomatic treatment. Half headache is a common phenomenon in daily life, but also a common clinical symptom, the most common cause is due to head cold or viral infection caused by dermal neuritis headache, mostly paroxysmal dull pain. You can give hot compresses and other physical therapy measures, and if necessary, you can apply pain-relieving drugs and nutritive nerve, antiviral drug treatment. Half of the headache is a common symptom of migraine, mostly throbbing pain, if the pain is more serious, you can consider applying pain-relieving drugs, such as nimesulide capsules, ibuprofen extended-release tablets, etc., and usually pay attention to avoid triggering factors. Tension headache and psychological stress, lack of sleep and other related, pay attention to regulate and good psychological state, ensure sleep. If the headache symptoms are more serious and the attack time is longer, we should do a cranial CT or magnetic resonance examination to exclude intracranial organic lesions, such as intracranial space-occupying lesions, vascular lesions, intracranial inflammation and so on. To summarize, there are many possible causes of half headache, most commonly seen in neuritis, migraine, tension headache, intracranial organic lesions, etc., and should be given active treatment for the cause of the disease.