So the last few nights, I have been getting a prickly sensation occur randomly on my face, arms, hands, legs and feet. Sometimes it feels a little like a burning sensation. Most of the time it doesn't hurt, but every now and then a prickle will catch me by surprise and hurt. It is really uncomfortable and is stopping me from getting a good nights sleep. It only occurs when I lie down to go to sleep at night, never during the day when I am moving around. Adjusting my position in any way while I lie down doesn't affect it at all. My pinky toe on my right foot also has an urge to twitch that I can control a little (although sometimes the urge overcomes). I have had a spell like this maybe 2 months ago now and it lasted maybe 3 or 4 nights (same result, poor sleep). Not sure if it is important, but I have had a bad lower back in recent times, "pulling" either the left or right side of my lower back once every month or so (definitely related to sport/movement).