One day I suddenly woke up at night and feeling extremely uncomfortable and irritated (or restless I have no idea). There's this unexplainable need to increase my heart rate or something. There's this weird restless feeling in my chest and abdomen area that I am unable to get rid of which gives me the urge to move but moving does not relief the feeling. I had to inflict pain to myself for relief.  Since then, I have had a few more of these episodes. I searched online and google kept returning me restlessness leg syndrome, but I don't have an urge to move my legs (I just have an urge to just move)... nor do I have a rapid heart rate or breathlessness... Any ideas what this problem is and if it is a health problem that may need me to be concerned?