I appreciate the courage of speaking up about this and writing us here. There are two things that are important. First, the fact that this is chronically uncomfortable makes it very important. Anything repetitious and unwanted demands attention.Secondly, the fact that you see this reaction as beyond a normal annoyance is important. The fact that you have difficulty regulating it is worth doing something about it.
The Find Help tab at the top of this page can help you find a therapist in your area. If you are working with a therapist already (since you say you have a diagnosis) I would talk about these images and your discomfort. This will help you develop some more skills for self control.