I have the same problem when I go out. As for shopping, I now go to only a couple of stores that I've become very familiar with. That helps some, but I still get overloaded with information (visual and auditory) and I get quite dizzy. I too have to get in and out as quick as possible.

Mark, I have the same problem when our son comes over. He and his dad get talking and they talk so fast and he is so loud! I can bearly tolerate it! Good idea to go away and put headphones on.