Here's a weird side effect on my feet that really bugs me. I didn't pick up much extra hair, but the hairs I have are longer. Sometimes, they get pulled--and they really hurt--when I wear socks with no shoes. This isn't something that happens for a minute and then stops; the discomfort goes on and on.
It's a real issue during winter because I want to sleep with socks on. Sometimes I lie awake, completely focused one or both of my feet, for quite some time. When they get warm enough, I take the socks off because it will take too long for me to fall asleep otherwise. Of course, I don't fall asleep easily anyway, but this irritation just makes my insomnia worse.