Hi everyone posting for a friend " My daughter is 3 years old and recently when telling her she's not allowed to do something she carries on alarming and bites herself really hard , she's never done anything like that before but she gets so angry and just bites her arm all the time , I really don't no what else to do I don't discipline or scream I just simply tell her what's not right and what's right I've tried everything I'm on the verge of crying because she really hurts herself I really don't no what else to do to stop this? Is it attention ?frustration? Shes NEVER done anything like this before Anyone been through this before if so has anyone got any tips how to stop it?