light-headedness or fainting, unsteadiness or a loss of balance, and a feeling of floating, wooziness, or heavy-headedness. In severe conditions, people may also experience sudden, severe headaches, chest pain, difficulty breathing, numbness, paralysis of arms or legs, double vision, rapid or ...
Although blacking out is mainly caused by heavy alcohol consumption, it can also be caused by epileptic seizures, fainting, low blood pressure, psychogenic seizures, low blood sugar, certain medications, and oxygen restriction.Blacking out can be diagnosed through physical examination, blood tests, el...