When a patient has REM sleep behavior disorder, they lack the paralysis that usually occurs in REM sleep. This absent or ...

People who are afflicted may complain of disrupted sleep or excessive daytime sleepiness. REM behavior disorder affects fewer than 1% of adults. It's more common in men and adults over age 50.

A new study from McGill University has found that a simple blood test could help predict the risk of developing dementia years in advance for people with a specific sleep disorder. This discovery ...