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Blood circulation disorders are the most common cause of dizziness. For example, if you feel dizzy from getting up out of bed too fast, it’s probably because the blood hasn't had a chance to catch up with your brain. Or, when any part of the balance circuit is not be getting enough blood, you will feel dizzy or faint. Some people are light headed because of poor circulation or as a result of hypertension, diabetes, hardening of the arteries. Anemia is still another cause of lack of blood flow to the brain resulting in dizziness. In addition, stimulants (caffeine, nicotine, drugs) can also decrease blood flow to the brain.
A blow to the head or injury can cause dizziness. Even a severe whiplash can cause some swelling in the circuits and make balancing a problem. Anytime the inner ear is injured, it can result in vertigo with subsequent loss of hearing and nausea.
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