Undiagnosed 6-yr-old, mother at end of tether!

Hi,

I would like some advice/help/sympathy!

I have a 6-yr-old boy who has anger issues and can be really defiant. He hurts other kids at school and was excluded for a day and a half the other week. I had a "Choices" interview with Camhs in April, but we have been on a waiting list since then, without being seen. His headmistress thinks he has Attachment Disorder, and he certainly seems to tick most of the boxes, but I am finding it hard to know how to deal with him. I am trying to set clear boundaries, but he doesn't seem to learn - the behaviour doesn't change. Instead, he resents me for punishing him.

I get really upset when we go out and he refuses to do as he's told - it makes me feel like an idiot for not being able to control a 6-yr-old! I feel like no-one wants us around and I can't take him anywhere without being really worried about his behaviour. We are due to go to Brighton this weekend, to visit friends, and I am just dreading him hurting their child, and running off or being wilfully disobedient in public. 

Any advice gratefully accepted...