Hemorrhage (most common)
42-72% of clinically apparent AVMs
Usually by age 20-49
Seizures
Ischemia (by vascular steal – rare)
Headaches
42-72% of clinically apparent AVMs
Usually by age 20-49
Arteriovenous malformation 
Venous angioma
Cerebral venous thrombosis
Cavernous malformation
Coma
Capillary telangiectasia
Brain abscess
Intracranial hemorrhage