Is it normal that my fingers get numb when i think something is gross?

Whenever I read/see/think about something that is disgusting or gory, my fingers get numb, especially my thumb. To the point that I have to put down whatever I'm holding or I'll drop it.
Stuff that generally makes this happen: Gore, especially if it has something to do with internal organs (weirdly specific that anything I read about appendixes makes this happen really bad??). Doesn't matter if it's an article or a gruesome photo of an accident. If I'm trying to talk or write about something that I feel disgusted and uncomfortable about, my fingers get numb and it starts feeling painful.