@kayept I've been treated with 15 mg Prednisone for PMR. My doctor thought we could do a fast taper since I responded so well. I took 12.5 mg for 3 days, then started 10 mg. While not as bad, symptoms returned particularly hours of morning stiffness. By mid afternoon I was in great shape. Went for a follow up and when asked about headaches, I said that I do get dull headaches in the middle of the afternoon. I couldn't really say how long that's been going on. I always thought it might be dehydration. Whelp! That opened the GCA can of worms. Now I'm on 60 mg. To your concern, when I was on the 15 mg. I started feeling tightness beneath my ears. My thought was that I might be doing more clenching since the Prednisone makes me feel keyed up. I have repeat labs next week. I hope there's enough indication that I don't have GCA if my symptoms and labs have improved so that I can stop the high dose Prednisone.

@kayept My Rheumatologist has ordered a CT Angiogram with contrast to check inflammation of any blood vessels. He orders this test more routinely now to catch possible risk for GCA since some symptoms can be vague.
At first, I was apprehensive about getting the test done but I realized I'm worried about GCA and have sinus issues and pain occasionally that I'm always worried about whether it's GCA.
I'm tapering prednisone now at 7 mg so that's another reason I decided to have it done.

@kayept
If you have not had TMJ before now, I would be concerned about GCA. Your symptoms could be due to jaw claudication. Also, tooth pain caused by inflammation of one or several of the dental arteries is a rare but reported symptom of GCA.