muscle spasm
"I had a muscle spasm across my back for 3 weeks. I took Alleve, Ibuprofen 800, Capzasym, Biofreeze, Ice, my husband massaged the area every night. All this provided very little relief. 

I went to the urgent care doctor recently for a sore throat and mentioned the spasm I am experiencing. He gave me Skelaxin samples.

After the first dose I expected to pass out like I do with muscle relaxants but I was not drowsy at all. Instead, I experienced something pleasant - relief!"