Have you tried Tumeric? I had plantar fasciatis in my feet, and inflammation in my joints. I cut out most sugar, and started taking a tumeric supplement once a day, and my pain was greatly reduced (if I completely go off sugar, it's 100% gone). Definitely not saying that would work for everyone, but maybe it might help? I just reread and realized it might be muscle related, which I don't know that any of this would help, sorry!