The blood flow to the brain is supplied by four main arteries to different areas inside and when the blood vessels burst or is blocked, a stroke may happen immediately. Stroke is a very common problem in the elderly and consists of two types:
Hemorrhagic: Internal bleeding of the brain
Ischemic: Lack of blood supply to the brain. Ischemic strokes are much more common and is directly related to the blockage of artery supplying blood to the brain.
Dizziness, nausea or vomiting
Sudden vision problems in one or both eyes
Sudden numbness on side of the body
Difficulty in speaking
High blood pressure