I would guess that GD is such a poorly-understood disease affecting too few people, and that the connection between the Shingles vaccine and GD is too speculative, for anyone to take any action.

I did tell my dermatologist about my reaction and he said there were similarities between GD and Shingles. He told me he would have warned me about it if I had checked with him first. I never read anything on the Shingrix literature about it trigger GD or triggering shingles in those of us with GD and never thought about asking my dermatologist firest.