Just tell them. If they can't understand they can just kiss off. I am so tired of insensitive people. Seriously, and people DO NOT understand epilepsy nor do they want to understand it. We have to stick together and support each other. Sorry I'm so blunt. I can understand your sensitivity, I'm opposite I have to have loud music when I'm upset. But I understand because I'm a super sensitive person emotionally. If that makes sense, the loud music makes me lose focus on my emotions.

I have problems with loud noises that are repetitive. Such as vacuuming, riding in a car for more than 2 hours(the road noise) and sometimes crowded places that are very loud. Music I can handle so I wear noise cancelling ear buds and listen to music in these situations.

You are experiencing Hyperacusis ( Sensitivity to certain sounds and noise ) with your Epilepsy . These certain sounds trigger you seizures.

You may want to look into using Noise Cancellation Headphones.

If your coworkers don't or won't understand, and if you are a good worker, then go to the superior. Explain your situation and politely explain that some simple accomodations will help you be more productive and provide a better all around work atmosphere.