androgenetic alopecia
"At the tender age of 25, I noticed that my hair was beginning to thin. Not wanting to look like my dad or brother, I got a prescription for Propecia. So far, it's been working. In fact, if I miss a dosage, I'll notice little bits of my hair fall into my keyboard or the pages of a book I'm reading!

Yes, this medication is expensive. My insurance won't cover it at all. (Funny that they cover Viagra, though). The only side effect is that I do notice a slight decrease in my sex drive - but honestly that's probably good. Keeps me out of trouble."