Apeirophobia

Apeirophobia (from ᾰ̓́πειρος) is the phobia of infinity or eternity, causing discomfort and sometimes panic attacks. It normally starts in adolescence or earlier and it is currently not known how it normally develops over time. Apeirophobia may be caused by existential dread about eternal life or oblivion following death. Due to this, it is often connected with thanatophobia (fear of dying). Like other phobias, apeirophobia may be tied to mental health conditions such as anxiety disorders or obsessive-compulsive disorder.

There is very little research on this phobia. Despite not being recognized specifically by the American Psychiatric Association in the DSM-5, it does meet their criteria for a specific phobia, which is a type of anxiety disorder. There are no known treatment methods that are specifically designed to treat apeirophobia.