DD is 4 just started in reception and seems happy at school. She has started some quite worrying habits though, the worst of which is pulling out her own hair. She seems to be doing it at night in her sleep - she's twissling her hair into knots and then pulling it out, this morning there was a good handful of hair on the floor by her bed that she'd pulled out. She also bites her nails which i know is fairly common but she's started biting other things too. She bites her water bottle - we have gone through two that she has destroyed since september. She's also biting the end of her coat sleves, which are now in tatters.
I'm really worried because aside from these behavious she's a happy little girl, enjoying school and no problems at home. I guess I'm just asking for advice on what to do, cos I feel like i need to address this somehow but I'm not really sure how.
I was brushing her hair this morning and there's a big bald patch on the one side where she's pulled all her hair out :(