Originally Posted by
BuffaloGal 
Oh, yeah, and as a sufferer of a compulsive disorder myself (trichotillomania, and it sucks too) I can say that compulsion of that nature is incomprehensible to anyone who doesn't have it. It can't be explained.
This made me giggle (not that it's a laughing matter). My sister and I both have this a little. We can always tell when the other one is stressed because we'll notice a bald patch in an eyebrow.