Glossary What are the epilepsies? The epilepsies are chronic neurological disorders in which clusters of nerve cells, or neurons, in the brain sometimes signal abnormally and cause seizures.
What is a stroke? A stroke is a medical emergency that happens when the blood flow to your brain is interrupted. Without blood, your brain cells start to die. This can cause serious symptoms, lasting disability, and even death. Keep reading to learn about the three main types of strokes, their symptoms, and treatments.
There are three main types of stroke: Transient ischemic attack Doctors also call a transient ischemic attack TIA a warning or ministroke. Anything that temporarily blocks blood flow to your brain causes a TIA. The blood clot and TIA symptoms last for a short period of time. Ischemic stroke An ischemic stroke occurs when a blood clot keeps blood from flowing to your brain.
The blood clot is often due to atherosclerosiswhich is a buildup of fatty deposits on the inner lining of a blood vessel.
A portion of these fatty deposits can break off and block blood flow in your brain. The concept is similar to that of a heart attack, where a blood clot blocks blood flow to a portion of your heart. An ischemic stroke can be embolic, meaning the blood clot travels from another part of your body to your brain.
An estimated 15 percent of embolic strokes are due to a condition called atrial fibrillationwhere your heart beats irregularly. A thrombotic stroke is an ischemic stroke caused by a clot forming in a blood vessel in your brain.
Hemorrhagic stroke A hemorrhagic stroke results when a blood vessel in your brain ruptures or breaks, spilling blood into the surrounding tissues. There are three main types of hemorrhagic strokes: The first is an aneurysmwhich causes a portion of the weakened blood vessel to balloon outward and sometimes rupture.
The other is an arteriovenous malformationwhich involves abnormally formed blood vessels. If such a blood vessel ruptures, it can cause a hemorrhagic stroke. Lastly, very high blood pressure can cause weakening of the small blood vessels in the brain and result in bleeding into the brain as well.
What are the symptoms of a stroke? The different stroke types cause similar symptoms because each affects blood flow in your brain.Jun 14, · NINDS researchers are studying the mechanisms of stroke risk factors and the process of brain damage that results from stroke.
Basic research has also focused on the genetics of stroke and stroke risk factors. Effects of Domestic Violence Anxiety. Anxiety can be described as the response to a future or possible threat.
Anxiety is closely related to fear, which is the response to a real or perceived immediate threat. A cerebrovascular accident is also known as a stroke. There are different types of stroke and various risk factors that can lead to a stroke.
Read on to learn about the signs of a stroke and the.
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Registered office: Stroke Association House, City Road, London EC1V 2PR. Adapted from Recovering After a Stroke, AHCPR Publication No. , prepared by the Agency for Healthcare Policy and Research. After The Flood Download this free, to-the-point, guide to help flood victims protect themselves against diseases and other hazards in the days and weeks following a flood.