muscle spasm
"I was diagnosed 15 years ago with fibromyalgia, myofascial pain syndrome and chronic migraines.  I have been through ALL the muscle relaxants and pain medicines - including narcotics - and never experienced any addiction or withdrawals.  I finally found a combination of Tramadol and Soma that allows me to be marginally functional, and now I can't get my doctors to continue the Soma!  They want me to try all the other muscle relaxants that DON'T work again!  SO FRUSTRATING! Now I'm unable to work or even maintain my home.  This is what you get when the  government controls your healthcare."