@megz
Isn't it amazing how many of these autoimmune conditions have many of the same symptoms. I was originally diagnosed with reactive arthritis and it felt basically the same as PMR too. Reactive arthritis was diagnosed when I was 32 so I was too young for PMR back then.

PMR was diagnosed when I was 52 so I was barely old enough for PMR. My rheumatologist reassured me that I also had PMR in addition to reactive arthritis because of a long history of flares of uveitis. I still haven't figured out why some autoimumune disorders like to attack the eyes too.
https://pmc.ncbi.nlm.nih.gov/articles/PMC6160350/
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When you toss in trigeminal neuralgia with all of that facial pain ... I have no idea why GCA wasn't suspected. I couldn't chew anything when trigeminal neuralgia was acting up.

Trigeminal neuralgia is often diagnosed incorrectly. It can be confused with dental problems, headache syndromes, temporal arteritis, sinusitis and tumors of the brain or the face.
https://www.ninds.nih.gov/health-information/disorders/trigeminal-neuralgia
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I don't see how anyone can be positive of having any diagnosis but inflammation seems to be the root cause of many disorders.