While the question asks for four types of strokes, understanding the most common types is crucial. According to the reference, the five types of strokes you're most likely to hear about are: ischemic stroke, hemorrhagic stroke, transient ischemic attack (TIA), cryptogenic stroke, and brainstem stroke. Since the question specifically asks for four, I will provide the four most commonly discussed.
Here's a breakdown of four common types of strokes:
Understanding Common Stroke Types
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Ischemic Stroke: This is the most common type of stroke. It occurs when a blood vessel supplying blood to the brain is blocked, often by a blood clot.
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Hemorrhagic Stroke: This type of stroke happens when a blood vessel in the brain ruptures and bleeds.
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Transient Ischemic Attack (TIA): Often called a "mini-stroke," a TIA is a temporary blockage of blood flow to the brain. While symptoms are temporary, it's a serious warning sign of a potential future stroke. According to the reference provided: "transient ischemic attack (also called TIA or mini-stroke)."
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Cryptogenic Stroke: This is a stroke of unknown cause. Even after extensive testing, the source of the stroke cannot be determined.