A Stroke or Brain Attack is a medical emergency occurs when blood flow to brain stops or interrupted or severely reduced and brain cells are deprived of oxygen and nutrients and begin to die. There are two kinds of stroke, Ischemic Stroke (caused by a blood clot that blocks or plugs a blood vessel in the brain) and Hemorrhagic Stroke (caused by a blood vessel that breaks and bleeds into the brain). Mini Strokes or Transient Ischemic Attacks (TIAs), occur when the blood supply to the brain is briefly interrupted.