Catathrenia (nocturnal groaning): A new type of parasomnia

Roberto Vetrugno, F. Provini, G. Plazzi, L. Vignatelli, E. Lugaresi, P. Montagna

Research output: Contribution to journalArticlepeer-review


Four patients between 15 and 25 years of age presented with exclusively expiratory groaning during sleep. Groaning usually occurred during the second part of the night, beginning at age 5 to 16 years. Patients were unaware of the nocturnal noise, but it alarmed others. Results of otorhinolaryngologic and neurologic examinations were normal. Expiratory groaning arose during REM and non-REM sleep stage 2, and was repeated in clusters. Nocturnal groaning, which the authors term catathrenia, represents a distinctive parasomnia.

Original languageEnglish
Pages (from-to)681-683
Number of pages3
Issue number5
Publication statusPublished - Mar 13 2001

ASJC Scopus subject areas

  • Neuroscience(all)


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