I have three teens now and they did " throwing them selves down hitting them selves , biting them selves , pinching, yelling, screaming, pulling thier oun hair and much more. I found that if you respond to this they do it more often. I ignored it and they would stop. It is more of a attention getter cause they see you responce strongly or even just saying no no or anything they keep doing it. This is what i did and all three of mine got out of it fairly quickly. Hope this helps ...