I have a friend with the following undiagnosed condition. If she sees certain textures e.g.: honeycomb, skin with boils, (in a recent film) skin with dozens of teeth stuck into it, she just doesn't hate it, it throws her into a prolonged state of mental distress. You can see in her face that she suddenly cuts off from the outside world and is deeply upset but can't communicate. She then recovers slowly over days but has flashbacks during this period.
Is this a known phenomenon with a name one can look up? I don't know if it counts as a phobia exactly but maybe it does.