In older people, it’s usually due to a blockage arising from atherosclerosis, the artery-clogging disease process at the root of most heart attacks, strokes, peripheral artery disease, and other cardiovascular conditions. A less common cause of blood pressure that is different in each arm is an aortic dissection.
Also asked, can blood pressure be different between arms?
If your blood pressure is higher in one arm, your doctor will probably use the blood pressure reading from that arm to monitor your blood pressure. A large difference in blood pressure measurement between your arms could signal a health problem, such as: Blocked arteries in your arms (peripheral artery disease)