I have been researching Oppositional Defiance Disorder (ODD) in great detail lately and think my 6 yr old child fits the criteria. I am taking the next steps necessary to help his quality of life. However ; my discussion isn't about him and his ODD. I recently broke up with a man who I believe has BPD and both disorders seem similar. Whats your opinion of Children with untreated or undiagnosed ODD, being a BPD adult. It seems like ODD is studied in children and young adults and then Thats all the information...so anyone with a view on this?