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Reasons for Light Headedness

Lightheadedness is a sensation of dizziness or a feeling that you are about to faint. It is usually not a cause for concern unless it is accompanied by other symptoms such as fainting or a racing heart. The feeling that you or your surroundings are spinning is called vertigo. Most cases of lightheadedness go away on their own or are easily treated.

  1. Common Causes

    • Lightheadedness is often caused by a decrease in the blood supply to the brain, per the Mayo Clinic. This can be triggered by dehydration, a sudden drop in blood pressure or getting up too quickly. It can also be caused by low blood sugar or anemia. Dizziness can be a side effect of certain medications. Lightheadedness can accompany allergies, flu and the common cold. It is also a symptom of pregnancy. Vertigo is usually caused by disturbances of the inner ear. Vertigo episodes sometimes accompany migraines.

    More Serious Causes

    • Serious conditions that can lead to lightheadedness include stroke, heart attack and shock, which is a severe drop in blood pressure. If you are experiencing one of these conditions, you will probably have other symptoms, such as vision changes, chest pain, loss of speech or a racing heart.

    Treatment

    • Treatment for lightheadedness depends on the cause. If you tend to get lightheaded with you get up quickly, avoid moving suddenly. If you know you are dehydrated, drink plenty of fluids. If dehydration has been triggered by gastroenteritis and you are unable to keep fluids down, you may need intravenous fluids. Talk to your doctor about dizziness that has been triggered as a side effect of medication.

    When to Call the Doctor

    • If you experience lightheadedness and have recently had a head injury, you should seek medical attention immediately. Other symptoms that may signal a more serious problem include fever higher than 101 F, headache, stiff neck, vomiting, convulsions, chest pains, or losing consciousness for more than a few minutes.

    Prevention/Solution

    • Treat ear infections, flu and other respiratory infections promptly to prevent complications. With any short term illness, drink plenty of fluids. Lightheadedness is usually temporary and in most cases will resolve without medical intervention. Whenever you are experiencing dizziness, be careful around tripping hazards such as loose rugs and electrical cords. Sit down or lie down immediately, and avoid driving or operating machinery while experiencing lightheadedness. Call the doctor if you have never experienced dizziness before or if lightheadedness persists.

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