Nothing hurts, looks discolored or fails to work.
Usually, people with high blood pressure experience no discomfort or outward signs of trouble. Yet high blood pressure is a killer, a silent killer. Directly or indirectly, high blood pressure accounts for nearly a million deaths a year. Uncontrolled, high blood pressure increases the odds that you'll have a heart attack, stroke, kidney failure or loss of vision. High blood pressure happens when your blood moves through your arteries at a higher pressure than normal.