You can have Rheumatoid with a negative Rheumatoid Factor. Mine has been negative but all other tests show I definitely have it. MRI's show bone deteriation in much of my body. Also there are many kinds and mine has went from most of my joints to deteriation in my ligaments and tendons in my shoulders. Good luck to you.

Mine also does that. I learned how the relieve the problem. I do not carry heavy articles around anymore. I bought a briefcase and a wirewire foldBle trolley that I use for work and all other carrying. People laugh at me and make rude remarks, but I don't care because my arms and elbows are slightly better. I also found that a tennis elbow brace helps a lot. I hope that you are having relieve from your hurting elbows by now.
PS: although initially diagnosed with RA, different Dr diagnosed Fibro. My last Rheumatoid Factor tests were negative. So I am not sure what I have anymore, but my pains are all the same.

Laser laser laser for me is helpful re inflam and swelling and pain..most anything is related to RA/A issues...including joint and ligaments etc....best of with this one though as it can affect in many ways..

Sorry should have said I have had. Lol

Yes u have had elbows and thumb joints lock. I find a cortisone injection helps amazingly. Within a day the affected joint is back to normal and it lasts months for me.