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What is a TIA?

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A TIA, or transient ischemic attack, is a temporary blockage or reduction in blood flow to part of the brain, and it is commonly caused by a blood clot, states WebMD. A TIA is a warning sign that a stroke is imminent.

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A TIA is sometimes called a mini-stroke. The symptoms are similar to those of a stroke, but they are short lived, usually subsiding in 10 to 20 minutes as blood flow resumes. Symptoms include sudden numbness or tingling on one side of the body, sudden vision changes, difficulty speaking or understanding speech, and walking or balance problems, according to WebMD. A less common type of TIA is the low-flow TIA that is caused by a sudden drop in blood pressure.

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