Lightheadedness is a common and typically unpleasant sensation of dizziness
and/or a feeling that one may faint. The sensation of lightheadedness can be short-lived, prolonged, or, rarely, recurring. In addition to dizziness, the individual may feel as though his or her head is weightless.
Common causes of dizziness include a migraine
, medications, and alcohol
. It can also be caused by a problem in the inner ear, where balance is regulated. Dizziness is often a result of vertigo
as well. The most common cause of vertigo and vertigo-related dizziness is benign positional vertigo (BPV).
Lightheadedness often occurs when you move quickly from a seated to a standing position. This positional change results in decreased blood flow to the brain. This can create a drop in blood pressure that makes you feel faint. It's often caused by problems with the inner ear, brain, heart, or use of certain medications.