Brain Stroke :
A brain stroke is a stroke that occurs when a blood vessel in the brain either blocks or significantly reduces blood flow to a part of the brain, leading to the death of brain cells from asphyxia and starvation. There are two basic forms of strokes. An ischemic stroke occurs when an occlusion caused by a blood clot blocks blood flow to brain, whereas the other form is a hemorrhagic stroke, which is a condition brought about by the bursting of blood vessel that causes bleeding in the brain. High blood pressure, high cholesterol, smoking, diabetes, and lifestyle factors such as a poor diet or lack of exercise can cause strokes. Symptoms include sudden weakness or numbness on one side of the body, difficulties with speech or understanding, vision problems, loss of balance, and a sudden severe headache. Strokes are medical emergencies that need to be treated immediately so that permanent damage is not caused to the brain. Treatment may include clot-busting medicines in the case of ischemic strokes or surgery to control bleeding in hemorrhagic strokes. Rehabilitation, including both physical and speech therapy, is very necessary to regain the lost functions.