
I get anxious in certain environments. The reasons for this can vary from general disorganization to bad lighting or clashing colors, but the biggest culprit is usually clutter.
Clutter is the stuff that has no "place", doesn't belong with its surroundings, and serves little to no purpose. It's not that I'm a clean-freak, it's that I'm a designer, and I have a heightened sensitivity to things that are out of place or irrelevant. When disorder reigns, I get uneasy, anxious, even dizzy. On occasion, it gets bad enough that I feel a sudden urge to flee as quickly as possible.
Sometimes I get the same feeling when I'm surfing the web. Everyone feels this sensation to some degree, and it triggers the "fight or flight" response hard-wired into our brains (stay here and fight through this mess, or get out as fast as you can). It's no wonder most web pages are abandoned within a few seconds of viewing.