I have a four-inch scar on my right leg from a coffee table incident that I described not too long ago.
I have an itty bitty scar on my left eyebrow from cracking my head on the corner of my bunkbed when I was a kid (my sister's fault )
I have a two-ish? inch scar on my left elbow from surgery after breaking my arm.
and other sporadic and random scars that I don't really remember acquiring.

As far as skin conditions go, I have tinea versicolor but it's really only apparent when I tan (which is why I retain a snow white tan) and is otherwise invisible. Google images and wiki makes it look and sound a lot worse than it actually is, I just get little white polka dots on my arms and stuff when I get too much sun