Having little pain on left hand shoulder when I put my hand back or night especially may be in sleep iam rotating my hand like anything. That's the reason. 4-5 times in last yr I have shouted like anything night time due to hand pain. It felt like something muscle stuck and even I can't move my hand I inch and body also upto 20 minutes. Have seen hell. My parents once though to call ambulance also. But I recovered in 20 min. It happend around 5 times. When I consulted doctor they took scan and told nothing its due to weaknwss. But that problems didnt solve