For a while now I have been awakened at night with a terrible pain in my tongue. Upon awakening, it almost feels like I am frozen with the pain. At times I can't move my tongue and it might even quiver. After the pain goes away I am fine and go back to sleep but in the morning notice a sore on the side of my tongue. It has happened on either side and sometimes I have bit it more than once in the same place on separate nights. This happens quite often and only when I'm asleep.