Why do I feel dizzy and see white spots when I stand up?

Orthostatic hypotension — also called postural hypotension — is a form of low blood pressure that happens when you stand up from sitting or lying down. Orthostatic hypotension can make you feel dizzy or lightheaded, and maybe even cause you to faint.

What is INOH disease?

INOH is an important pathologic condition in children with complaints of orthostatic intolerance and can be an unrecognized cause of chronic fatigue. This condition can be identified by using a noninvasive beat-to-beat continuous blood pressure monitoring system.

How do I know if I have orthostatic hypotension?

Blood pressure monitoring. Your doctor will diagnose orthostatic hypotension if you have a drop of 20 millimeters of mercury (mm Hg) in your systolic blood pressure or a drop of 10 mm Hg in your diastolic blood pressure within two to five minutes of standing, or if standing causes signs and symptoms.

Is it normal to feel dizzy when standing up?

People who become dizzy or light-headed when standing up often recover quickly when they sit down and then slowly stand again. However, it is usually important to determine what is causing the dizziness.

What causes dizziness and lightheadedness when sitting down?

Reasons of Dizziness While Sitting. Dehydration. You become dehydrated when you lose more fluid than you take in. You may lose fluid because of diarrhea, traveling, vomiting, and excessive sweating. You feel dizzy because dehydration lowers your blood pressure, which in turn restricts the flow of blood to your brain.

How do you stop dizziness when resting?

Ensure that you do not lie flat on your back but keep your head a bit elevated to stop a dizzy spell. Be sure to sit up slowly after the dizziness has stopped. You should take some rest when you are recovering from some virus illnesses, such as a cold or the flu.

Why do I feel dizzy after I eat?

The dizziness may strike after you eat a meal, because digestion diverts blood flow and may lower your blood pressure. Up to 20\% of people over 65 experience some degree of orthostatic hypotension.