This disorder has eluded myself for several decades.My Vietnam Veteran friend has it . Sad thing is …. His VA doctor diagnosed him with ADHD , PTSD , even Paranoid Schizophrenia. Never this . After helping / caregiving for 15 years , I finally know the answer . Thanks to a new neighbor, whom was a Paramedic and also dealt with her husband having such disorder . I believe “KNOWING “ is half the battle . UNDERSTANDING, what brought about , how life is perceived by the individuals living with these such ways . I am hopeful more PODCASTS are available about “ADULT “ DEFIANT DISORDER. As I’ve found numerous individuals whom are still, at there age dealing with it .