Catathrenia, classified initially as a parasomnia, is now thought to be a sleep-disordered breathing pattern, reports Clinical Advisor.

Patients are unaware that this occurs but are socially impacted when they sleep overnight outside of their home. This is often when they first learn that there is an abnormality. The groaning often sounds sexual or morose, which can be even more embarrassing. As this disorder can occur in young children, overnight sleeping with friends can be humiliating.