Autism and OCD

Autism and OCD: Understanding Their Co-Occurrence

With insights from a psychologist in Melbourne

Why talk about autism and OCD together?

Autistic people can also experience Obsessive-Compulsive Disorder (OCD), and this overlap is more common than many realise.

However, these experiences are often:

  • Misunderstood

  • Overlooked

  • Or incorrectly attributed to autism alone

If you’re looking for support with autism and OCD in Melbourne, having a clear, affirming understanding of both can make a meaningful difference.

A neurodiversity-affirming perspective

Autism is a neurotype, not a disorder to be “fixed.”

A neurodiversity-affirming approach recognises that:

  • Autistic ways of thinking, feeling, and interacting are valid

  • The goal of therapy is to reduce distress, not change identity

  • Support should build on strengths, not suppress differences

This is especially important when working with OCD, where not all repetitive behaviours should be targeted.

Autism vs OCD: Understanding the difference

While both autism and OCD can involve repetition, the reason behind the behaviour matters.

Autistic experiences:

  • Routines, repetition, or stimming

  • Often regulating, grounding, or enjoyable

  • Support emotional and sensory balance

OCD experiences (compulsions):

  • Driven by anxiety or intrusive thoughts

  • Feel urgent or distressing

  • Aimed at preventing something bad from happening

Why OCD is often missed in autistic people

OCD can be harder to identify because:

  • Repetitive behaviours may be assumed to be part of being autistic

  • Intrusive thoughts are internal and not always visible

  • Some people may describe experiences differently or prefer concrete language

How OCD can show up

OCD may involve:

  • Intrusive thoughts (e.g., harm, contamination, morality, identity)

  • Reassurance-seeking or checking

  • Mental rituals (e.g., analysing, repeating, “figuring things out”)

  • Avoidance of situations that trigger anxiety

These patterns are consistent with clinical descriptions from the International OCD Foundation.

Shared experiences: Anxiety and uncertainty

Both autism and OCD can involve:

  • Heightened anxiety

  • A strong need for predictability

  • Difficulty tolerating uncertainty

Guidelines from the National Institute for Health and Care Excellence highlight how intolerance of uncertainty plays a key role in OCD.

For autistic people, this can:

  • Intensify distress around intrusive thoughts

  • Increase the urge to seek certainty

  • Make compulsions feel harder to resist

Evidence-based support: ERP therapy

The most effective therapy for OCD is Exposure and Response Prevention (ERP).

If you’re looking for ERP therapy in Melbourne, this approach involves:

  • Gradually facing feared thoughts or situations

  • Choosing not to engage in compulsions

Over time, this helps:

  • Reduce anxiety

  • Build tolerance for uncertainty

  • Change your relationship with intrusive thoughts

Adapting ERP for autistic clients

ERP can be very effective for autistic people when it is adapted in a respectful, collaborative way.

1. Respect autistic traits

Not all repetitive behaviours need to change.
Stimming and routines can be important forms of regulation.

2. Focus only on distress-driven patterns

Therapy targets OCD—not autistic identity.

3. Use clear, direct communication

  • Concrete language

  • Predictable structure

  • Collaborative planning

4. Consider sensory needs

Sensory sensitivities should always be taken into account during therapy.

Inclusive, affirming care matters

A safe therapeutic space means:

  • Your identity is respected

  • Your experiences are taken seriously

  • You don’t need to mask or explain yourself

Professional guidance from the Australian Psychological Society supports inclusive, person-centred practice.

When to seek support

You might benefit from working with a psychologist if:

  • Anxiety feels overwhelming

  • Repetitive behaviours feel distressing or driven

  • Intrusive thoughts are persistent

  • You’re unsure what’s autism and what might be OCD

Autism and OCD support in Melbourne (Fitzroy, Northcote, Brunswick)

If you’re based in Melbourne, including suburbs like:

  • Fitzroy

  • Richmond

  • Collingwood

  • Brunswick

  • Northcote

…it can be helpful to work with a psychologist who understands both:

  • OCD and ERP therapy

  • Neurodiversity-affirming approaches to autism

Final thoughts

Autism and OCD can overlap—but they are not the same.

With the right support, it’s possible to:

  • Reduce anxiety

  • Untangle OCD from autistic ways of being

  • Build a life that feels more manageable, authentic, and aligned with your values

References

  • National Institute for Health and Care Excellence (NICE). Obsessive-compulsive disorder and body dysmorphic disorder: treatment guidelines

  • International OCD Foundation. OCD and ERP resources

  • Autism Spectrum Australia. Autism and mental health

  • Australian Psychological Society. Evidence-based and inclusive psychological practice

  • David A. Mataix-Cols et al. Research on OCD

  • Simon Baron-Cohen. Research on autism