Orthostatic or autonomic dizziness is a common complaint in patient who seeking dizzy clinic. Patients with autonomic dizziness presented their dizziness as nonvertiginous dizziness, light-headedness, or fogginess in the head, which are usually exacerbated by physical exertion (but not specific changes in head position), straining (e.g., the Valsalva manuver), and orthostatic challenges. Orthostatic hypotension and postural orthostatic tachycardia syndrome are two common causes of autonomic dizziness. Because the vestibular system influences both respiratory and cardiovascular control, damage to the central or peripheral vestibular system also can cause to compromise the ability to adjust breathing and blood pressure during movement and changes in posture. Here the author reviews the clinical features of autonomic dizziness from various causes.