PMRpro, I celebrated my 40th birthday in a cardiac intensive care unit with a diagnosis of pericarditis/myocarditis. Definite inflammatory - autoimmune disorders. In 2012, I had a second bout of myocarditis.
During the winter of 2015, I worked 12 hours a day, 7 days a week, for five months doing a 40 year renovation on our primary residence. The scope of the project included demolition, framing, drywall, cabinet making, tile setting, plumbing, wiring, and all forms of light and heavy construction. Each night I would get up between three and four AM to take Ibuprofen for the onset of troubling muscle aches that seemed unrelated to the project and were unfamiliar to me. I shrugged and wrote them off as old age (70) and hard work.
When the following spring arrived, I left my renovation project behind and went to our vacation home in upstate NY where I worked tirelessly planting a large vegetable garden. Here, I broke through the surface of a fishing/waterfowling path I cut along the river, that had been undermined by bank beavers. My left leg dropped in the beaver tunnel and never hit bottom, while my right leg stayed on the surface. When this occurred, my right knee came up to my right ear; a new yoga move not intended for seniors. Afterward, I had excruciating pain in my hip girdle region, and within days, PMR symptom began.
My theory is I had significant inflammation, (and possible low level PMR), from the winter work and spring planting that was being marginally suppressed by my body's normal cortisol production. Regrettably, the acute injury caused additional inflammation that my hypothalamus, pituitary, adrenal axis (HPA) could not suppress. This injury, combined with previous inflammation, and my history of autoimmune disorders caused an inflammatory cascade, or "perfect storm" that brought on the PMR.
Although adrenal insufficiency is not a commonly listed cause for PMR, I ask that you please look at: The Adrenal Steroid Status in Relation to Inflammatory Cytokines in PMR; Oxford Journals - Medicine & Health - Rheumatology Volume 39, Issue 6 Pp. 62.
I have a second bathroom to complete and my kitchen cabinet doors need to be refinished, but I am now impatiently watching them from my recliner.
Although I have not run a trapline since my adolescent years, this fall, (PMR symptoms permitting), I may just put on my waders and get some material for a nice new Yukon style beaver hat.
If you reject my theory that beavers can cause PMR, I hope you found my theory somewhat unique and interesting. LOL