There is no difference between left and right migraine. Migraine, despite its name, is not necessarily a migraine; it is essentially a vascular neurological headache that can involve the temporal region bilaterally, the unilateral temporal region or the frontal region, or the posterior occipital region, the top of the head or even the whole head. Even in the same patient, the form and location of the attack often changes over time, and it may not always be a left-sided or right-sided headache. If there is no change in symptoms from the onset to the development of migraine, the diagnosis of migraine can be treated with medication for a long time without the need for repeated review of the head CT. if the nature or location of the headache changes and continues without relief, accompanied by other symptoms and signs, it is necessary to be alert to the occurrence of other diseases, such as intracerebral hemorrhage and intracerebral tumor.