Parasomnias: Things that Go Bump in the Night

Hypnogely: A case report

“…Hypnogely is, a benign physiological sleep phenomenon, classified under ‘other parasomnias’ as per the modified classification of parasomnias by the American Academy of Sleep Medicine (Table 1). 4 In rare cases, it may be a pathognomonic sign of a more sinister medical disorder. Manifesting either as chuckling, giggling or as frank laughter, in the majority of cases, sleep laughter arises as a derivative of dreaming and, as such, is closely related to (polysomnographically defined) REM sleep.…”