Dizziness (Dizzy) (cont.)

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What are some common causes of dizziness?

While classifying dizziness into lightheadedness and vertigo categories may help understand how the body works, sometimes it is worthwhile to review common reasons why people might complain of dizziness.

Low blood pressure

Dizziness, lightheadedness, and the feeling of passing out is a common complaint in people who have low blood pressure. When the blood pressure is too low, not enough oxygen-rich blood is being delivered to the brain, and its function can be affected. If the brain's blood supply is decreased too much, the person may pass out (syncope). Symptoms may worsen when changing position from lying down or sitting, to standing up.

In addition to feeling dizzy, associated symptoms may include:

Low blood pressure may be the result of an underlying illness or disease, or it may be a normal physiologic condition. Some common reasons for low blood pressure include the following:

Medically Reviewed by a Doctor on 3/27/2015

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