orthostatic hypotension

Is it normal to feel dizzy when standing up from a chair too quickly?

1. Introduction Experiencing a brief episode of dizziness or lightheadedness when transitioning rapidly from a seated or lying position to a standing posture is a highly common physiological event. This sensation is primarily caused by a sudden, temporary drop in blood pressure, a mechanism clinically referred to as orthostatic hypotension or postural hypotension. In the … Read more

What does it mean when your vision goes black when standing up?

1. Introduction Experiencing a sudden blacking out of vision when standing up is a primary symptom of orthostatic hypotension. This occurs due to a transient drop in blood pressure that momentarily deprives the brain and optic nerves of adequate oxygenated blood. The body usually corrects this fluid shift within seconds, but persistent episodes warrant clinical … Read more