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light-headedness

light-headedness makes a person feel like they are about to faint or pass out. it is caused by a momentary drop in blood pressure and blood flow to the head.

nausea or vomiting sometimes accompanies light-headedness. symptoms usually improve or go away after lying down.

it is common to feel light-headed occasionally. light-headedness often occurs when a person gets up too quickly from a seated or lying position (orthostatic hypotension).

unlike vertigo, light-headedness does not produce a sensation of movement. vertigo causes a spinning or whirling sensation that may lead to nausea or vomiting, loss of balance, trouble walking or standing, and falling.

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