muscle spasm
"Likewise. As others here have posted, I had an L-4 / L-5 issue. It required a lumbarectomy in 1995. I also have no ability to control myself from over doing dosage with medicines that have mind altering effects.  My doctor knew this and prescribed skelaxin "as needed" and a daily stretching regimin. "As needed"  has been very controlable, even for me (with my weakness for over use). My pain is relieved and my mind stays clear."