what causes blood pressure to drop when standing
Orthostatic hypotension, also called postural hypotension, is a sudden fall in blood pressure that occurs when you stand up quickly. Hypotension is the term for low blood pressure. Blood pressure is the force of your blood against the walls of your arteries. When you stand up, gravity pulls blood into your legs, and your blood pressure begins to fall. Certain reflexes in your body compensate for this change.