I may know feeling what you're talking about. Would you consider it also a "tingle" or an itch in your joints that is always there, but is somewhat relieved when your mind isn't on it?

The feeling also plagues and bothers me, but it hasn't been too bad lately dut to my not focusing my thoughts on it.

I get the feeling most in my left big toe joint, but it may spread to my other toes, fingers, knees, and hip/leg joints when I think too closely about it.