I've just been noticing this strange phenomenon within myself: I think I have some sort of facial blindness, except it pertains to just me. I often forget what I look like, and am surprised when others recognize me.
Whenever I go out in public, I'll put on a pair of sunglasses. Since they shield my eyes from the world, I feel like they create a barrier between me and everyone else. In a huge city it's kind of a relief: I can finally take a break from awkward glances at people I don't know, and nasty stares from others for looking like a complete oddball.
At the same time, this often perplexes me: I'm surprised when my peers actually recognize me. A person is identified by their eyes, eyebrows, and bridge of the nose. Even when I try to cover up my identifying features, I still stand out, and appear only as myself. I'll only appear to be myself unless I think up some better disguise, so I can give myself a break from the stress of socializing.