What conditions can cause Rheumatoid-like symptoms, aside from RA, Lupus or Lyme disease? I've had tests for all of these (including both R factor & Anti CCP tests for RA) but everything came back negative.
Over the past year and a half my wrists have developed noticeable deformities on the side of the radius, with severe pain, stiffness and limited range of motion, and the right thumb now pops out of joint frequently. The diagnosis I got was "tenosynovitis" but I believe it's wrong due to the changes of the bone itself. My wrists are now both approx. 1.5" larger than they were before this started, with no weight gain involved and no swelling of the soft tissue.
I currently have no income or insurance, so the diagnosis was done by the local health department.
Any helpful answers would be greatly appreciated!