Catathrenia, a REM predominant disorder of arousal?

• Catathrenia is an uncommon sleep disorder with a characteristic breathing pattern, often accompanied by groaning.• It usually arises from REM sleep and is generally preceded by an arousal from sleep.• While generally considered a social nuisance, a high proportion of catathrenia patients also report daytime sleepiness.• CPAP and sleep consolidating medication may improve symptoms, but are limited by low patient acceptance.

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