"I have had spondyloarthritis most of my life but my PMR symptoms are different; much worse."
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I think a combination of things tends to have a cumulative effect. I could handle flares of uveitis with and without accompanying flares of reactive arthritis as long as I had enough Prednisone to take.

Having PMR on top made everything worse ... much worse. That was when I never had enough Prednisone to take. Now I don't take any Prednisone. Have you ever tried a biologic for Crohn's? Actemra allowed me to taper off prednisone relatively quickly. I suspect Kevzara might work for me too. Around 5 mg is when adrenals insufficiency from long term Prednisone use becomes a factor.