@js2022 REM means Rapid Eye Movement and meansto pretty much what is says -It's a phase of sleeep where you are dreaming and your your eyes are moving about rapidly.while you're dreaming Apparenly only h]mammals and bird are known to do this. The term REM Disorder refers to when a person is asleep, and dreamareing, and they are physically acting out their dream. I dreamed someone was trying to grab my baby (now a strapping lad who will soon be 50 but in my drea he was an infant) My husband is used to me talking (but unintelliglbly) and thrashing about in the bed. He normally just tries to gently wake me up, or if my arms are thrashng about he may have to put a bit more musled into befoe I calm down. In this particular case, as I was dreaaming that someone was trying to steal my baby , when I felt his hand on my arm, I incorporated that into my drea (because some one really was grabbing my arm) so I tried to bite his hand to make him leet go. Fortunatly over the past 58 years, he has learned to protect himself from the deranged creature thata I bcome when I dream and he escaped my wrath. I don'tknow if there's a test for it - the fact that you do have dreams and that you physically act them out is an automatic diagnosis. Sleep walking is proably a REM discorder.My neurologiist prescribed.a sleeping pill in case they got out of control, and so far, I've not needed itf. sometimes I do physicalyl enactt things my brain thought I was experiencing and my body followed Mr. Brain's instrctions on what it should do about the dangers. I can imagine how some folks might be at risk if their spouse gets totally out of control.Of course sleep walking is especiallly scary because you may wake up and your spouse is nowhere to be found, or you're the one with REM Sleep Disoder and you leave your house and wake up some where and don't have a clue why you're there or how you got there. If what you are experiencing is troublesome, then discuss it with your neurologist There may be other things to help calm it down . and may you have only sweet dreams.