I've never had the problem that I physically can't watch TV (though this has been the case with very stimulating TV like action films or dance music videos), however I did recognise that there was a point during my recovery during which TV was overtaxing my brain, making me feel foggy and light headed, so was bad for me and was preventing me from healing.

To me it sounds like you've got a similar problem, but more extreme.

I spent about 2 months watching very minimal TV, maybe 2 hours a week of programmes that I really liked and were chilled out (a nature programme and a history documentary).

During that time I could not read books either, for a simlar reason. I got by through listening to audiobooks, and by going for short, peaceful walks in a park.

It was very boring but it seemed to do my brain a lot of good. I'd just stop trying to watch TV for a while if I were you. Audiobooks are a lot easier on the brain and you get through them suprisingly quickly. You can get them off iTunes if you use it.

All the best.