Acrophobia is a FEAR of heights. It is an intense and irrational FEAR of being in high places or of falling from high places. It is a type of anxiety disorder that can cause physical symptoms such as sweating, trembling, and difficulty breathing. People with acrophobia may experience feelings of panic, dread, and terror when confronted with heights. They may also avoid activities that involve heights, such as climbing ladders or going on roller coasters. Acrophobia can have a significant impact on a person's quality of life, making it difficult to participate in activities that involve heights.