A stroke is a sudden event that leads to change or loss of brain function. When a stroke is caused by decreased blood flow to the brain, it is an ischemic stroke. When the cause is bleeding into the brain, it is a hemorrhagic stroke. When the bleeding is on the surface of the brain, it is a subarachnoid hemorrhage. The September 21, 2011, issue of JAMA includes an article on depression and stroke.
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