- A very common reason for feeling lightheaded is a quick decrease in your blood pressure. Medications might be the culprit. See the references for a more in-depth look at what causes blood pressure to drop.
- Feeling lightheaded can occur if you are dehydrated. It can also occur if you have consumed too much alcohol or coffee or if you have exercised too strenuously in hot temperatures. Be sure to consume lots of water to keep your body well hydrated.
- Having a common cold or suffering from allergies can cause you to feel lightheaded. Taking the proper medication for your allergies or for your cold should take care of the lightheaded feeling.
- Arrhythmia is an abnormal heart rhythm and while not very common, can in fact cause you to feel lightheaded. You can check your own heart rate to determine any abnormality of its rhythm or you can visit your local doctor.
- Vertigo can cause you to feel lightheaded and happens when there is a problem with the brain receiving the body's balancing and positioning signals. The more common causes of vertigo include migraines, drop in blood flow in the arteries, and ear injuries, among others.
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