Intermittent headache is considered for the following reasons: 1. migraine, in the acute attack of migraine, it is manifested as paroxysmal intermittent headache, which lasts for about an hour each time, and then again later. 2. intermittent headache is considered as spasm of cerebral blood vessels, some patients with long-term cerebral blood supply deficiency will cause spasm of cerebral blood vessels, which is manifested as throbbing headache in paroxysms. If the headache is relieved after the intermittent period, the headache will appear again if the blood vessels in the head spasm again. 3. Intermittent pain in the head, go for an electroencephalogram examination to find out if there is any abnormal discharge in the brain, that is, if there is any possibility of epilepsy. 4. Intermittent headache, pay attention to whether the patient has high blood pressure, some patients with high blood pressure will have intermittent, paroxysmal headache when the blood pressure is elevated.