Lightheadedness is a feeling of weirdness, unsteadiness, or dizziness that makes you feel like you may pass out. In other words, it is a sensation of dizziness or vertigo. Synonyms for the word lightheadednesses include vertigo, giddiness, dizziness, presyncopal, unsteadiness, wooziness, light-headedness, and faintness. Other phrases that could express similar symptoms include feeling out of balance, feeling faint, being dizzy, feeling woozy, feeling wobbly or feeling unstable. When a patient is seeking medical attention, it is important to describe their symptoms adequately so that the doctor can diagnose and prescribe the proper treatment.