There are many causes of left headache, such as vascular migraine, sinusitis headache, otogenic headache, odontogenic headache and so on. According to the nature and form of headache, acute headache can have the following reasons, mainly manifested in subarachnoid hemorrhage, cerebral infarction, cerebral hemorrhage, encephalitis, meningoencephalitis, epilepsy, hypertensive encephalopathy and so on. Subacute headache is more common in intracranial space occupying lesions, benign intracranial hypertension and hypertensive headache. Chronic headache is more common in migraine, cluster headache, tension headache, drug-dependent headache, sinusitis, muscle contracture headache and so on.

Migraine is characterized by sudden pain caused by blood vessel fluctuation. Its beat frequency is the same as that of the pulse. If you concentrate, you will feel a jumping action. Sometimes, if this kind of beating is serious, you may have blurred eyes, stars or black spots in front of you, nausea and vomiting. This is called vascular headache. Work pressure from mental and psychological levels will inevitably encounter some unpleasant or complicated problems in the work. In addition, the anxiety and pressure of daily life in metropolis make the nervous system of the brain in an excessive state, sometimes depressed, extremely tired, lacking physical exercise, sleeping too long, irregular daily life, sometimes not eating for a long time, and sometimes swallowing these things will cause migraine.

Another headache is neuralgia. Neuralgia suddenly occurs in the temple, face, above and on one side of the ear. For example, lightning, electric anesthesia, knife cutting, acupuncture, burning pain and tearing pain all belong to neuralgia. Pay attention to the specific symptoms of pain. If it is vascular headache, it should be treated according to vascular headache. If it is neuralgia, it is necessary to check whether there is any problem around the nerve and treat it. Patients will have left pulsatile headache, feel the blood vessels beating, and may have clinical manifestations such as nausea and vomiting, photophobia, and fear of sound. Pay attention to rest and ensure sleep. Painkillers can be used for symptomatic treatment.

Pay attention to whether there is temporal arteritis, especially in elderly men, and there may be severe pain in the left head. Such patients should pay attention to ESR detection. The erythrocyte sedimentation rate increased significantly, which was related to rheumatic immune diseases. Glucocorticoids can be used for treatment. Pay attention to whether there is neuralgia, such as greater occipital neuralgia, which can also cause left brain pain.