any tips for lighting? Grocery stores?

It's just ridiculous in stores. And even after. Can't speak, memory gone. Almost as if something was triggered. Wonder if it's neurological, or it's just because of our heightened sensitivity to the external, and our perceptual shifts.

I found out that one time i went in to a store while on my cell phone, and it worked, i did not even think about being in there. I know that sunglasses help me. But that's just covering up symptoms, whereas talking on phone is a distraction.

any helpful methods?