Non-24-Hour Sleep-Wake Disorder

Non-24-hour sleep-wake disorder is a circadian rhythm sleep disorder in which the individual fails to synchronize to a 24-hour day. Instead of a regular sleep schedule, they’ll find their sleep time gradually delays by minutes to hours every day. Here’s what you need to know about non-24-hour sleep-wake disorder. 

Here are 14 of the strangest sleep-related disorders that may keep a person up at night.