Are you sure that you do not mean, "TIA" or "transient ischemic attacks".
If this is what you actually meant, an explanation is that TIAs occur when bloodflow to the brain is blocked. They can cause eyesight or brain problems. Unlike strokes, they disappear within 24 hours.
TIAs may start suddenly and last only a few minutes. You may be confused or have sudden difficulty seeing, walking, talking or understanding conversation. According to the Mayo Clinic, common signs include: slurred or garbled speech or trouble understanding others; double vision or sudden blindness in one or both eyes; dizziness, loss of coordination or balance; numbness, weakness or paralysis in the face, leg or arm -- often on one side of the body.
The more TIA events you have the greater your risk for having a stroke.
A variety of factors can cause loss of blood flow to the brain, including blood clotting in an artery; narrowing, injury or inflammation of a blood vessel; cancer, a blood disorder (such as sickle cell anemia), or other condition; and a blood clot moving to the brain from another place in the body.
Examination within 60 minutes provides the best opportunity for successful treatment.
Most of the above information was copied or paraphrased from the following website you can visit for yourself for more information.
http://www.washingtonpost.com/wp-dyn/content/article/2005/08/30/AR2005083000367.html?nav=rss_health
If you google "mini-strokes" or "transient ischemic attacks". you will find quite a few websites and articles with more information on this subject.
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Thanks,
Christie Baldwin
