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Illustration of stroke subtypes. (A) Ischemic stroke occurs as a result of an obstruction within a blood vessel supplying blood to an area of the brain; usually by a clot from a small vessel lesion, intracranial/carotid stenosis or cardioembolic origin. (B) Hemorrhagic stroke occurs when an artery in the brain leaks or bursts (ICH), or an aneurysm ruptures (SAH). ICH, intracerebral hemorrhage; SAH, subarachnoid hemorrhage. Color images available online at www.liebertpub.com/jmf
