I am in a LOT of pain and searching for answers. I have left a message for my dr. but figured someone on this message board may have experienced this too. I started on Synthroid (not generic) about 1 1/2 months ago. I have been on 100mg for about a month. My TSH levels were 60 times higher than the high end of the normal range before Synthroid. Don't have the lab results back yet to know if it's changed. But, here's the problem. Fri I started having pain when I went to bed - mostly under my shoulder blade and upper shoulder. Sometimes, I feel like it's almost gone and other times, especially laying down at night, it's extreme pain. Today it has increased to the point of shooting pain down from my lower neck (in the back) through my upper shoulder. As with many symptoms of FMS, there's more than one thing that can cause them. I drove over 4 hours (not all at once) on Thurs just before this all started. I figured it was from the driving, but now that it's in my neck every time I swallow, I thought maybe it's thyroid and/or medication causing this. Any insights?