Overview

Light-headedness is a feeling that you are about to faint or "pass out." You do not feel as if you or your surroundings are moving. It is different from vertigo, which is the feeling that you or things around you are spinning or tilting.

Light-headedness usually goes away or gets better when you lie down. If light-headedness gets worse, it can lead to a fainting spell.

It is common to feel light-headed from time to time. It may be caused by many things. These include allergies, dehydration, illness, and medicines. Light-headedness usually is not caused by a serious problem. It often is caused by a short-lasting drop in blood pressure and blood flow to your head that occurs when you get up too quickly from a seated or lying position.

How can you care for yourself at home?

• Lie down for 1 or 2 minutes when you feel light-headed. After lying down, sit up slowly and remain sitting for 1 to 2 minutes before slowly standing up.
• Avoid movements, positions, or activities that have made you light-headed in the past.
• Get plenty of rest, especially if you have a cold or flu, which can cause light-headedness.
• Make sure you drink plenty of fluids, especially if you have a fever or have been sweating.
• Do not drive or put yourself and others in danger while you feel light-headed.