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When fear of the dark reaches a degree that is severe enough to be considered pathological, it is sometimes called scotophobia (from σκότος – "darkness"), or lygophobia (from λυγή – "twilight"). Some researchers, beginning with Sigmund Freud, consider the fear of the dark to be a manifestation of separation anxiety disorder. [4]
The English suffixes -phobia, -phobic, -phobe (from Greek φόβος phobos, "fear") occur in technical usage in psychiatry to construct words that describe irrational, abnormal, unwarranted, persistent, or disabling fear as a mental disorder (e.g. agoraphobia), in chemistry to describe chemical aversions (e.g. hydrophobic), in biology to describe organisms that dislike certain conditions (e.g ...
The fear of dark is widely known as nyctophobia, as well as scotophobia or lygophobia. Cleveland Clinic notes that around 45% of children might have an unusually strong fear of some kind. The fear ...
Leichtman–Wood–Rohn syndrome; Leifer–Lai–Buyse syndrome; Leigh disease; Leigh syndrome, French Canadian type; Leiner disease; Leiomyoma; Leiomyomatosis familial