I was just wondering if you are suffering from a viral infection if it can cause extreme pain in your muscles. It started in my back and has went down my right arm and now my index finder is actually numb. The doctor said this was consistant with a viral infection and It would likely be another week until I feel better. I feel miserable. I can not lie flat on my back with out having muscle pain. It feels like someone is twisting my arm non-stop. He did a reflex test and my knee did not respond on the right side. I was okay until my finger started to get numb. What do you think?