Acrophobia
phobia specific to heights
Acrophobia is the fear of heights. People with acrophobia experience a fear or phobia when they are at a certain height, and they are being made aware of it. The word is derived from Ancient Greek akros - top, height, and phobia - fear. People who do not suffer from acrophobia are said to have a head for heights. Vertigo is often used to describe a fear of heights.