Hi I am 19 years old and I had Guillain-barre syndrom 7 months ago. I am a college student and i play college volleyball. I had lost 20 lbs of muscles and managed to get most of it back over the summer. I am half way through volleyball season and doing well. The only thing that is bothering me is my lower back. At first i thought it was muscle related but im beginning to think its in my spine. its becoming very painful to bend and when i touch my chin to my chest it sends pain through my lower back. Has anyway had this after having guillain-barre? or could it be back?