Hugs, hugs and more hugs. I just wanted to let you know that I think you're amazing. Truly amazing. And that you don't need to pretend like you've got it all together for the sake of his teachers. You said they're providing support for your DS in the classroom, but what support do you get at home? Can you access some home help? What do you do to recharge? When is your time out/break time? What help are you getting for YOU? You're dealing with so much...

I definitely agree that diet is worth pursuing - might take awhile, but it's worth the effort.

As for your original question, ODD is often present with other disorders such as ADHD, Autism, CD etc So there may be multiple issues to address.