muscle spasm
"I have been on Soma for 10 years for fibromyalgia and degenerative disc disease.  It is by far the best muscle relaxer that I know of for this type of chronic pain.  My insurance company will not pay for it any longer.  They recommend Zanaflex, Skelaxin. These are very expensive medicines, running  $450-550/month.  Soma costs me $30 without the insurance for a month supply.  I take it 4 times a day when I need to.  It is important to take it as instructed and not to take more than your doctor prescribed. It gives you a better quality of life without pain.   If you need to discontinue, do it gradually."