Acrophobia is a very common syndrome for people who travel to high altitudes for work or travel. The risk of acrophobia is related to age, place of residence, physical condition, medical condition or psychological obsession with heights.

Impaired consciousness is a less severe condition than coma. However, impaired consciousness is associated with dysfunction of both cerebral hemispheres or the reticular activating system. Impaired consciousness is caused by structural or nonstructural damage. The damage may be localized or diffuse.