acrophobia
/ˌækrəˈfoʊbiə/
noun
Extreme or irrational fear of heights.
Carla develops acrophobia (fear of heights), which makes it difficult for her to take elevators, park her car, or do flagpole sitting.
dizziness,giddiness,light-headedness,loss of balance,loss of equilibrium,spinning of the head,swimming of the head