In the shadows, a figure watches you, but you are powerless to scream in your sleep. This isn't just Sonakshi Sinha's ghost story; it could be the terrifying reality of sleep paralysis ...

Many men run to get their testosterone checked, only to learn their symptoms are due to a different issue. This urologist ...

Called meditation relaxation therapy, the treatment reduced sleep paralysis by 50% after eight weeks for six people with narcolepsy, compared with a control group of four participants, found a small ...

Many people who experience sleep paralysis see frightening hallucinations some call "sleep paralysis demons." Illustration by Leah Abucayan/Alberto Mier/CNN via CNN Newsource ...

This type of hallucination is a hallmark for many people with sleep paralysis. It occurs during transitions into or out of rapid eye movement, or REM, sleep, similar to a traffic jam at a busy ...

Many people who experience sleep paralysis see frightening hallucinations some call "sleep paralysis demons." (Illustration by Leah Abucayan/Alberto Mier/CNN via CNN Newsource) ...

Illustration by Leah Abucayan/Alberto Mier/CNN via CNN Newsource Many people who experience sleep paralysis see frightening hallucinations some call "sleep paralysis demons." ...

About 40% of people with sleep paralysis have visual, auditory or tactile hallucinations, such as pressure on one’s chest or feeling out of body, Jalal said.