Thanks for your comments! My understanding was that the relatively low doses of prednisone we take for PMR wouldn't prevent GCA from developing, so it's reassuring that your rheumatologist says otherwise! Also good info about heading to see an opthamologist if GCA-related vision problems occur. I would have a much better chance of getting in to see my eye doctor promptly than getting to see anyone at the hospital, where I'd probably have to sit waiting for hours on end and then end up being misdiagnosed, which is what happened when I first went to ER for my PMR pain.