Hi. I'm Michelle 36 year old, married 5 years to HS sweetheart. I have 2 children, ages 3.5 and 9 months. My 3.5 year old is driving us all crazy. She hasn't been diagnosed with anything yet, but something is wrong I think. She is so angry all the time. She hits, kicks, bites, and scratches if she doesn't get what she wants. She is hitting her teacher and friends at preschool. She is hitting me and completely losing all control when I put her in timeout. She yells at me (and husband) and talks back constantly. She screams "no!" at her teachers when they ask her to do something. She NEVER looks me in the eye when I am talking to her (if she is in trouble)and sometimes I swear she ignores me completely. She does things to deliberatlely hurt people, her sister, her classmates, me. From small things like knocking over a tower that her friend just built, to biting her sister for no apparent reason. We have seen these problems since I was pg with daughter#2, but they have only gotten worse over time. She was in a VERY NEGATIVE preschool for 18 months, with an idiot teacher who treated all of the kids like little adults. She is very intelligent, moved up from the 2's to the 4's within one year because of this. I think that only hurt her behavior. She was barely 3 and in a 4-5 year old classroom. No wonder she was acting out, right? Anyway, Dr. says I am overanalyzing her behavior-- that she is just acting out because of a new sibling, new school, and I need to be calm (yea, right) and give her time. What do you guys think? I have another dr. appointment tomorrow and I think I might insist that they evaluate her.