Hypotension, also known as low blood pressure, can cause dizziness, particularly when going from lying down to sitting or standing. "When you get up too quickly from a sitting or lying position and your blood doesn't travel as quickly up to your head, you can experience a 'head rush' feeling," explains Sherry Ross, MD, ob-gyn and women's health expert at Providence Saint John's Health Center in Santa Monica, California. To prevent this type of dizziness, take your time changing body positions. Also, talk to your doctor about possible issues with your circulation.
