Episode 2: The ADHD-Autism Overlap and the Misdiagnosis That Costs Families Years

If your teen or young adult has an ADHD diagnosis and an oppositional defiant diagnosis sitting beside it, this episode is worth twenty minutes of your time.

Dr. Ed Callahan and Amy J. open with a clinical point that changes what families do next: ADHD and autism travel together far more often than most assessments account for. If a young person has an autism diagnosis, some degree of attention difficulty is nearly always present. Going the other way, ADHD is the more familiar diagnosis and the more confidently given — and when autism traits are also in the room, they are frequently passed over in favour of oppositional defiant disorder (ODD).

That substitution is not a technicality. It changes the treatment plan, and it changes it in the wrong direction. A genuinely oppositional teen does need firm boundaries and consistent consequences; that is the correct approach for that presentation. A teen on the autism spectrum, refusing for reasons of overwhelm, transition difficulty, or a nervous system that has run out of capacity, needs close to the opposite. Treat the second like the first and, as Amy puts it from her own family's experience, you are throwing gasoline on a fire.

Dr. Callahan's guidance is plain: an ADHD diagnosis paired with an ODD diagnosis is a red flag. Get a second opinion. Get a third. And test any diagnosis against what you actually observe at home, because you are the one with years of data.

They also introduce pathological demand avoidance (PDA) — sometimes described as a pervasive drive for autonomy — which looks like defiance from the outside and comes from somewhere entirely different underneath.

The second half is Dr. Callahan's own path, and it explains where the approach came from: private practice, then a wilderness therapy program, then co-founding what was likely the first therapeutic boarding school built specifically for teens with autism and ADHD, then more than a decade of in-home family interventions. He is candid about the cost of that work and about why he moved away from it — those programs reach very few families, and the ones that did exist have thinned out considerably since the pandemic.

Amy raises the practical version of the same problem: parents today have fewer places to turn than they did fifteen years ago, at a time when the demands on neurodivergent kids have grown. The generational note lands hard — most parents raising these teens were not raised with any of this themselves, and are learning it in real time while already exhausted.

The episode closes on the balance that never fully resolves: accommodating versus enabling, and how hard to push. Dr. Callahan reframes "enabling" itself, a word borrowed from addiction recovery that has drifted into meaning something purely negative. You do want to enable your teen — to enable the healthy things.

Listen to the full episode: https://www.neurodiversity-u.com/podcasts/parenting-neurodivergent-teens-young-adults

Download the free Learning Guides and Workbooks for the series: https://www.neurodiversity-u.com/podcast-workbook-optin

WHAT YOU WILL LEARN

  • Why ADHD and autism co-occur far more often than most assessments reflect, and what that means for your child's diagnosis
  • Why an ADHD plus oppositional defiant combination should send you back for a second opinion
  • The one distinction that changes everything: a truly oppositional teen needs firm boundaries, a teen on the spectrum needs the opposite
  • What pathological demand avoidance is, and why it is mistaken for defiance
  • Why co-regulation matters, and what "tagging out" to your co-parent actually accomplishes
  • Why intensive out-of-home programs have thinned out since the pandemic, and what that leaves families with
  • How to tell accommodation from enabling, and why "enabling" is the wrong word for what you are worried about

CHAPTERS

00:00 - Welcome and Introduction

02:00 - Why We Are Making This Podcast

03:20 - A Misdiagnosis in Real Time

04:00 - Why Oppositional Defiant Is the Wrong Label

05:20 - Amy's Family: The Diagnosis That Came Late

06:20 - ADHD and Autism Travel Together

07:00 - Why Assessments Miss the Autism

08:00 - The Red Flag: ADHD Plus Oppositional Defiant

08:50 - Demand Avoidance Looks Like Defiance

09:40 - When Firm Boundaries Are Right, and When They Are Not

10:20 - Dr. Callahan's Background: Wilderness Therapy

12:20 - Founding a School for Autism and ADHD

15:00 - What Changed After the Pandemic

16:00 - Co-Regulation: Your Calm Is the Intervention

17:40 - Tagging Out to Your Co-Parent

20:20 - In-Home Interventions and Why They Reached So Few

23:20 - Making This Accessible

26:40 - Why Everything Has to Be Tailored

28:20 - A Generation Parenting Without a Map

29:40 - Advice From People Who Do Not Understand

32:40 - Accommodation Versus Enabling

35:00 - Closing and How to Reach Us

36:40 - Educational Disclaimer (Not Therapy)

ABOUT DR. ED CALLAHAN

I am Dr. Ed Callahan, and I help parents of neurodivergent teens and young adults guide their child into a successful, independent, and thriving adulthood with less conflict, distress, and resistance.

Join me for deep dive discussions on parenting teens and young adults with ADHD, ASD, NLD, OCD, PDA, RSD, executive functioning challenges, and learning issues including dyslexia, dysgraphia, and dyspraxia.

If you would like to discuss your specific family situation, the best place to start is a short conversation with me. There is no pressure and no obligation: https://calendly.com/dr-ed-callahan/introduction-consultation

MORE FROM NEURODIVERSITY UNIVERSITY

Website and free training: https://www.neurodiversity-u.com 

YouTube: https://www.youtube.com/@EdCallahanPh.D 

Instagram: https://www.instagram.com/neurodiversity_u 

Email: [email protected]

This podcast is for parent training and educational purposes only. It does not represent therapy and does not establish a therapist-client relationship.