Positive result for anti rnp antibodies probably means you have mctd. It also is present in some cases of lupus but I think some of those cases just have undiagnosed overlapping connective tissue disease like mctd. The pains you describe in your joints, legs, etc are similar to what I experienced the first 6 months (the pain was horrible, muscles, all my joints, and I swelled up like the Michelin man) until meds brought my immune system under control. Maybe you posted the info, but are you taking any controlling meds? Sounds like both lupus and polymyositis symptoms.
Thanks for the compliment. I just try to help steer others through the ordeal of lupus and or myositis diseases.
MCTD (lupus, scleroderma, polymyositis). Diagnosed 2005. Kidney, liver, GI tract, dysphagia, raynauds, Barretts esophagus, quadriplegic in 2005. Recovered and now active in skiing, tai, chi, hiking, golf. Meds: prednisone 2.5mg, imuran 25mg, amlodipine, benazapril, omeprazole, potassium, folic acid, vitamins, maxide and various supplements and vitamins.
Remain optimistic and you can overcome the odds.