I too am hypothyroid for years and years and years and every so often, my TSH level goes way off, like off the charts high and they have to adjust my medication. During those times, my FM gets awful. Since we have flares, it takes me a while to figure out that it might be my thyroid. So many of the symptoms of both are the same, muscle pain, fatigue, etc, etc. My TSH and T4 have been normal now for about
two years but I still deal with the symptoms of FM, it has never gone away. Has it gotten better? Hard to say. Just during the times my thyroid is off, it gets much worse...hope this makes sense
Miriam