Most cerebellar infarcts can be cured with active and correct treatment if the infarct foci are small and the general signs and symptoms are mild. If the infarct focus is large, it may leave certain sequelae. Patients mainly present with dizziness, balance disturbances, ataxia, and also explosive speech. If the patient is severe, he or she may also develop impaired consciousness, including drowsiness, lethargy and coma, mostly with cerebral edema and increased intracranial pressure. Most patients with cerebellar infarction are caused by lesions of the vertebrobasilar system, and common causes include severe hypovolemia and severe hypotension. It may also be caused by heart disease, such as heart valve disease, atrial fibrillation, and congenital heart disease, if present. When caused by heart disease, it is generally known clinically as cerebral embolism, and is also seen in patients with atherosclerosis, hyperlipidemia, hyperglycemia, and hypertension. The incidence is also significantly increased if the patient has hyperhomocysteinemia.