Light-headedness's a common and often unpleasant sensation of dizziness and/or feeling that one may be about to faint, which may be transient, recurrent, or occasionally chronic. In some cases, the individual may feel as though his or her head's weightless. The individual may also feel as though the room's "spinning" or moving (vertigo). Most causes of dizziness aren't serious and either cure themselves quickly or are easily treated. Keeping a sense of balance depends on the brain processing a… (More on Lightheadedness)