Hate them, hate them, hate them!! I've been getting them for as long as I can remember. Mom gets them, my brother gets them, and my sister does too. My dad is the only one who doesn't. I have a big one right now and its really annoying. I go to the mirror to check it out and I see that there's another one beginning to form. I usually get them because I have big lips and so I'm always biting myself and then it becomes a sore. However I read somewhere that it could be because of stress also? Anyone else have this problem? Sometimes I get them once a month and sometimes I won't get them for months. I don't want to look it up to confirm that it can be caused by stress because one time I did and it said that it can be caused because of liver problems or some other serious problems and it freaked me out even though I've been getting them since I was a little kid and have been fine and I've also had a physical and everything way okay. If you also get them feel free to share your hate for them also lol.