Every year, large numbers of people worldwide suffer from strokes. Severe strokes could permanently damage your brain. Stroke is one of the major causes of paralysis and death in the world.
Stroke is characterized by sudden disruption in the blood supply to the brain. Lack of blood flow, inhibits oxygen and glucose supply to the brain. In the absence of oxygen and nourishment, the brain cells die causing permanent damage to the part of their brain where blood supply had been disrupted.
Blockage of the artery, which supplies blood to a particular area of the brain, causes stroke. The artery may be clogged for several reasons. Formation of a clot or thrombosis is one of the primary reasons of stroke. High blood pressure, high cholesterol level, diabetes and smoking are the risk factors responsible for developing thrombosis. Sometimes a blood clot or plague formed in a cardiac artery breaks lose, and travels to the brain through the blood stream. It clogs an artery of the brain causing embolic stroke. Cerebral hemorrhage, characterized by rupturing of an artery, which causes bleeding in the brain, also causes stroke.
Recognizing the warning signs of stroke
However, we can prevent any permanent brain damage by preventing an impending stroke. Nearly every stroke victim experience few warning signs of an impending stroke. The early signs of stroke are sudden severe headache without any known reason, sudden numbness or weakness of the face, limbs or a side of the body, dimness of vision, difficulty in talking or loss of speech, loss of balance, difficulty in coordination and sudden dizziness. Sometimes these symptoms might last only for a few minutes. This is known as transient ischemic attack. These symptoms, if ignored, would lead to severe stroke in the near future.
Transient ischemic attack, also known as mini stroke, last for about five minutes. Although, a mini stroke does not damage the brain, but nonetheless, it needs immediate medical attention. Studies have shown that 17 percent of stroke victims had experienced the symptoms of mini stroke on the day of the severe attack. Nearly 9 percent had a mini stroke the day before the big attack, and 43 percent had experienced the symptoms of mini stroke sometime within the past 7 days prior to the severe attack. If you notice any of these symptoms in yourself or someone near you, immediately contact your physician. Poor understanding of the early signs of stroke increases the risk of medical emergency.