Dizziness and lack of blood supply to the brain are listed in neurology. Dizziness includes peripheral vertigo and central vertigo, and the common diseases causing peripheral vertigo are Meniere’s syndrome, vestibular neuritis, vaginitis and otoliths. The common diseases that cause central vertigo include cerebrovascular disease, mainly seen in cerebellar and brainstem hemorrhage and cerebellar brainstem infarction. If there are cerebellar and brainstem tumors present, they may also be caused by transient ischemic attacks in the posterior circulation, which may also occur in patients with a history of cerebellar trauma, and also in patients with hypertension. Insufficient cerebral blood supply usually occurs in middle-aged and elderly people, and the common causes include atherosclerosis, hyperlipidemia, diabetes mellitus, and hypertension. Patients can have various symptoms, depending on the location of the lesion; history of insufficient cerebral blood supply can present with blackness in front of the eyes, as well as sensory and motor disorders of the limbs; insufficient cerebellar blood supply can manifest as dizziness, balance disorders, and ataxia.