I will tell y what happened to me last year whilst away from home for four months ....
From Oregon driving to Mexico ......just over into Mexico and I started to get bad pain in my arm , swollen and lumps on the muscles at the top of my arm....I was already taking presnisone for PMR so took five Mgs instead of two......thought it was PMR ......it was very painful in fact my husband told the Doc when we got back that I was guarding it......Doc said it was crystals.......still get just a bit of it now.....hope you are getting somewhere....Beryl