Orthostatic Hypotension

Orthostatic hypotension, also known as postural hypotension, is a medical condition characterized by a significant drop in blood pressure when changing from sitting to standing, often leading to dizziness, heart palpitations, or even loss of consciousness due to inadequate blood flow to the brain. It involves a sudden or gradual fall in systolic blood pressure of at least 20 mmHg or diastolic blood pressure of at least 10 mmHg, primarily caused by delayed constriction of lower body blood vessels, leading to blood pooling in the legs and reduced cardiac output.