Long term corticosteroid use is not a good thing. In general they weaken your immune system, especially over long use.
PR is an auto immune problem and I would highly recommend a Rheumatologist. Will probably take about 6 months to get in and see one.
I think that Jim Shockey was just diagnosed with it. Stated that he was told it was most likely from a tick bite and the disease stated had lied dormant in his system for a while and stress brought it out. (His wife just died from lung cancer around the same time).
Shockey is from Canada and with the tyrant Trudeau, I would be willing to bet that Shockey was vaccinated and that played a role in his firing up as well. I do know he has mentioned getting IV infusions of IgG, IgA, IgM or some other immunoglobulin to help with it.