Dizziness means many different things to different people: lightheadedness, vertigo, poor balance, mental fogginess, and other concerns. Lightheadedness, meaning a feeling like the patient may pass out, is usually due to low blood pressure, often orthostatic hypotension. Vertigo, meaning a sensation of spinning or movement, can be an inner ear problem or a brain problem. Stop toxic substances; if there is nystagmus, refer to an ear, nose, and throat specialist (ENT) for a full evaluation. Perform the Dix Hallpike maneuvers to assess for benign paroxysmal positional vertigo and refer to physical therapy for repositioning maneuvers if positive. Consider vestibular rehabilitation; consider a short course of medication such as scopolamine or meclizine; consider ordering a magnetic resonance imaging (MRI) scan of the brain, because the concussion sometimes unmasks another unrelated problem. Dizziness meaning “mental fogginess” usually turns out to be attention deficit. Dizziness meaning vague and nonspecific malaise usually turns out to be fatigue, depression, or anxiety.