I went through a spell of this this past summer. What I tried and what seemed to help was daily doses if
Apple cider Vinegar
I already ate an organic diet with lots of veggies and omega 3's
The biggest impact was removing all gluten from my diet. It is apparently very inflammatory. Dairy is inflammatory as well but I am already dairy free. I had a relapse when I cheated on the gluten free thing. So now I am off gluten completely and fee awesome. It's really improved my health. I had toyed with the idea for a year but couldn't bring myself to give it up but now that I know it eliminates my joint pain it's, no pun intended, a piece of cake.
Hope you find a natural cure.