Mark is a middle-aged man who has recently begun to talk and flail about while he is sleeping, which is very aggravating to his wife. It seems as if he is acting out a dream. Which of the following sleep disorders is most similar to Mark's problem?

Question

Quizplus · Accepted Answer

REM sleep behaviour disorder involves the acting out of dreams during REM (rapid eye movement) sleep, which is a characteristic of Mark's problem. Pseudo-insomnia refers to the perception of insomnia without actually experiencing it, somnambulism is sleepwalking, and night terrors involve sudden and intense fear in the middle of the night.

Mark Is a Middle-Aged Man Who Has Recently Begun to Talk