I have had PMR for five years, with classic shoulder and hip symptoms, initially and during flares. Never been able to get lower than 8.5mg Pred until this year. Now down to 6mg. Always slow taper - max 0.5 per month. Over the last month or so I have had increasing arthritis in hands. It is quite uncomfortable and seems inflammatory - on bad days there is some redness especially around joints. With short experiments, I can eliminate it temporarily either by increasing Pred for a few days or taking some NSAIDs (plus PPI of course).
Given my own experiences, I think it is some kind of latent arthritis masked by Pred rather than PMR. What do you all think?