people at risk for heart attack are also at a higher risk for stroke, since the underlying disease process – atherosclerosis – can block blood flow to the brain, just as it does in the heart. Although many people know that chest pain is a sign of insufficient blood flow to the heart, they may not recognize the symptoms of inadequate blood flow to the brain. As a result, they can have a mild stroke and not know it. Symptoms of a stroke (or pending stroke) include: Sudden loss of vision in one or both the eyes. Sudden onset of weakness, numbness, or tingling on one side of the body. Sudden drooping of one side of the face. Sudden difficulty with speech or balance. Sudden confusion. Stroke experts encourage anyone who experiences the symptoms of stroke to seek medical help immediately. If you wait to see whether the symptoms will pass before seeking help, you risk suffering irreversible brain damage.