The causes of headache are head and also systemic causes, mainly including: 1, cold is more common, cold causing headache is only one of the symptoms of cold, cold has bad cold, fever, cough, nasal congestion, runny nose; 2, vascular headache, vascular headache is a large category, is a generalized way of speaking. Such as migraine is a cause of vascular headache, vascular headache is mainly the spasm of blood vessels, but also the excessive constriction of blood vessels or excessive expansion of cerebral blood vessels, can lead to headache. The main characteristic of vascular headache is chronic, long-term recurrent attacks, and treatment still requires a doctor’s visit. Cerebrovascular headache is a chronic and long-term process, so treatment should be patient; 3. Neuropathic headache, in which there are several nerves in the head and face. Trigeminal neuralgia is more common and stubborn. There are also lingual-pharyngeal neuralgia and greater occipital neuralgia. The pain is characterized by recurrent, short-lived episodes, and the nature of the pain is twitching, burning, pins and needles or tugging. Recurrent attacks are relatively short, but recurrent, you should go to the hospital to find a doctor for treatment, acupuncture, Chinese medicine and western medicine will have certain effect; 4. Brain tumor, headache caused by brain tumor is a gradual onset process, gradually aggravated, can have headache, vomiting, hemiparesis. It can be found by doing CT or MRI. There is also acute cerebrovascular disease, such as large cerebral infarction, cerebral hemorrhage, subarachnoid hemorrhage, which can also cause headache. If there is a sudden acute headache, you should go to the hospital to see a doctor in time to not delay the condition.