heart and blood vessel disorders
Dizziness or Light Headedness When Standing Up
Key Points
Dizziness or light-headedness when standing typically involves a decrease in body fluid volume or autonomic nervous system dysfunction. Aging often causes some degree of autonomic nervous system dysfunction, but doctors examine all affected people to ensure that no nervous system disorders are present. Tilt table testing is a common test of autonomic function. Treatment involves physical measures to reduce venous pooling, regular exercise, and sometimes increased salt intake,fludrocortisone, and/ormidodrine. 