i have had severe back pain for a year now. its been chronic. ive had an mri of my thoraic spine and neck but the only thing they reorted on it was disc protrustions that shouldnt be the cause of pain. i also had a bone scan and bone density that came back normal. went to a neurologist normal. brain scan normal. i am now waiting to see a pain specialist and an orthopedic. i have been to the chiro numerous times but everytime i go my spine readjusts and pops and cracks, the adjustment doesnt hold. i feel alot of pressure on my spine and i will try to crack my back on tennis balls to relieve some pressure. what is causing this stiffness pressure and constant cracking down my spine? just before it cracks i feel a pressure and it is constanty. what could be wrong? im so confused i dont know of anyone that has pain so bad that there spine needs to crack over and over even when stretching and bending?