"I googled what is the strangest known sleep disorder. What I found is insane. Number five is sexsomnia. And it is when individual acts out sexual behaviors during sleep. It could be as minimal as making sexual sounds during sleep or serious as sexual assault all without intention or awareness. Number four is “Sleeping Beauty Syndrome”. This is a rare disorder that forces your body into a reoccurring period of excessive sleep that can last for up to 20 hours a day. In third place is common and well-known sleep paralysis. When we fall asleep, chemicals are released by the brain that paralyzes your muscles so you don’t act out your dreams. Now sleep paralysis disorder is when the individual wakes up but their muscles are still paralyzed by the brain. And just to make things even worse, commonly coupled with sleep paralysis are intense and realistic hallucinations. People with sleep paralysis disorder report not being able to move a muscle while they’re hallucinating that intruders are entering their bedroom and attacking them. Jumping over to second place is sudden arrhythmic death syndrome. This is when you just simply and unexpectedly die in your sleep. Those who suffer from this sleep disorder have been known to scream, moan just before the death occurs, and it is impossible to wake them up. And the number one strangest sleep disorder is called fatal familial insomnia. Now this disorder has no known cures and involves progressively worsening insomnia over a period of months, which leads to hallucinations, delirium, progressive dementia, panic attacks, phobias, lack of appetite, and obviously eventually death. The average survival rate from an on-set of symptoms is only 18 months"