Most common cause of postural hypotension is
(C) Peripheral neuropathy # Causes of postural syncope: In patients receiving antihypertensive or vasodilator drugs and those who are hypovolemic because of diuretics, excessive sweating, diarrhea, vomiting, hemorrhage, or adrenal insufficiency.
Progressive cerebellar degeneration
Striatonigral degeneration
Peripheral neuropathy
Adrenal insufficiency
Miscellaneous