<font color="blue"> Welcome to Psych Central, Janine. I hope you find that others do understand with what you are dealing. Self harm comes in many forms, but you are correct in that most of the members who post haven't discussed biting much, if at all.
I'm not sure what a person does is important; why a person does it, is, imo. Do you find you want to remove yourself (your feelings) from a situation, do you need to feel real (pain), are you doing it to get attention, are you acting out, or do you feel the need to be punished? That wasn't posted for you to answer here, but for yourself. (And for everyone who self-harms.)
I hope you can find a better way to cope, in the future...but until that time, please be safe with your injury. Are you seeing a therapist (T) are you on medication? You don't have to answer any question you don't wish to.
Share more when you wish.
Again, welcome to PC.