What is the reason for the left brain pain?

Left side brain pain may be caused by organic lesions of the left side of the brain, such as brain parasite infection, brain tumor, cerebral hemorrhage and large-scale cerebral infarction. Patients may also show nausea and vomiting, right limb sensory disturbance, motor dysfunction, and language dysfunction, including motor aphasia, mixed aphasia e, and dysarthria. Brain MRI examination can definitely diagnose. If the patient has primary neuralgia, such as left trigeminal neuralgia, greater occipital neuralgia and temporal neuralgia, it can also be manifested. The general symptoms are paroxysmal, lasting for a few seconds to 1 - 2 minutes, can suddenly stop, can be repeated attacks, mainly symptomatic treatment. In addition, primary headache diseases, such as migraine and cluster headache, can be caused, to be analyzed comprehensively.