Hi LF, I also have both, and can relate to sometimes not knowing what is causing what. I often feel as though i've been hit by a truck or that i've been exercising excessively when I've done nothing, and the foggy head is just awful. I did have a spate of taking a low dose of nortriptyline which is an antidepressant that works as a muscle relaxant in low doses which helped, but stopped taking it when i stopped all meds due to a massive reaction to Arcoxia a few months ago, its worth a try though. Unfortunately no great advice to give other than take it easy as much as you can, I find the fatigue of this coupled with AS fatigue to be so horrendous sometimes i don't actually know how i keep going, but i do!
