Plenty of horror films have been described as "claustrophobic" over the years, but for people who actually experience claustrophobia - the fear of enclosed or narrow spaces - some movies are unwatchable. Phobias are often used as inspiration for films that seek to incite fear, whether that's an aversion to holes or terror inspired by the open ocean. These movies to avoid if you have claustrophobia are likely to incite nightmares or worse.
If you have claustrophobia, you may find just reading about some of these flicks to be an uncomfortable experience. The best claustrophobic movies are quite terrifying for those who are genuinely unnerved by tight spaces.