Metrophobia, the fear of small spaces, can be debilitating for those who experience it. Synonyms for metrophobia include claustrophobia, which is a fear of closed-in spaces, and enochlophobia, which is the fear of crowds. Other terms that may be used to describe this anxiety disorder include agoraphobia, which is a fear of being in situations where escape may be difficult, and acrophobia, which is a fear of heights. No matter what term is used, it is important to recognize that metrophobia is a real and valid condition that can be treated with therapy, medication, and self-help techniques.