No she's not a teenager just yet but is in a couple of months. Since she was 3 Years old, she has had these phases of having compulsive behaviours usually around something which might cause her harm. To explain , for example , the first one when she was three was picking her nose. This sounds funny but became a real obsession. Myself and her dad had told her not to pick her nose , because apart from it looking horrible , it Also might harm the inside of your nose , or it might be un hygienic. She would Ask, can I do this?We would say no, she would reply well I feel like I really need to what happens if I do it, we would say, look, just don't do it, she would reply but what if I do etcetera, etc.She would then eventually get quite upset. Sometimes , I would say , oh , for god's sake , just do it , out of frustration , Or I would explain that , since it was her Body She could choose to do it , but I was advising That it was not a good idea, and then she would seem even more upset about this , because then she didn't know whether she should or shouldn't do it. This phase lasted a few months.Then it was onto something else: we have had poking herself in the eye, Looking directly at the sun, Making joints click in certain ways, Biting down on Her inner lip until it is red and even bleeding, And finally , currently, biting hard on cutlery or crockery, Until her teeth very slightly chip. Now that i am writing this down , it actually sounds Quite insane , we have just got used to it. It can be very frustrating because Talking about it doesn't seem to help .. ignoring it doesn't seem to help ... down playing it doesn't Seem to help, And being more forceful about it doesn't seem to help. I do feel for her because she clearly cannot help herself. But obviously I m worried because I feel that this is at least a borderline mental health issue , and I am Not sure where to go with it.