My upper body feels like it is burning. When this has happend in the past my doctor has said it is costochondritis. However I must mention that my neck has been making a lot of cracking and popping noises(there was a large crushing sensation at the top of my neck base of my skull without pain) and my spine seems to be cracking, popping and moving more than usual. I also should mention my shoulders move out of the sockets randomly. Doctor said this is because I am double jointed . I ve had X-rays a while ago of my upper back and nothing was found. I also should mention I have twitching on and off in some parts of my body including my fingers, face and legs.