Direct answer
van Steensel, F.J.A. et al. · Ung, D. et al. · Verified 2026-08-10
Quick summary
In brief
Key points
Prevalence and Presentation
Among autistic people, anxiety rates are higher in those without intellectual disability, likely because greater awareness of social expectations amplifies anxiety.
Anxiety in autism often presents atypically. Instead of verbal reports of worry, autistic individuals may show increased repetitive behaviours, sensory avoidance, insistence on sameness, selective mutism, or physical symptoms (stomach aches, headaches). This atypical presentation means standard anxiety screening tools may miss the condition — clinicians need autism-adapted assessment approaches.
In Ontario, families frequently report that anxiety symptoms are misattributed entirely to autism ("that's just the autism") without investigation of a treatable co-occurring anxiety disorder. Advocating for thorough assessment is critical.
Evidence-Based Treatment in Ontario
Cognitive Behavioural Therapy (CBT) adapted for autism is the first-line treatment for anxiety in autistic individuals. Modified CBT protocols use visual supports, concrete language, special interest integration, and extended treatment duration. Research supports the effectiveness of autism-adapted CBT, with meta-analyses showing moderate to large effect sizes.
Medication (typically SSRIs) may be appropriate for moderate to severe anxiety. Autistic individuals are more sensitive to medication side effects, so the "start low, go slow" approach is standard practice. Combining CBT with medication often produces the best outcomes for significant anxiety.
Ontario families can ask about psychologists, children's mental health agencies, and adult psychotherapy programs. Confirm eligibility, referral steps, cost, and autism adaptations before relying on a pathway.
Evidence and sources
van Steensel, F.J.A. et al.
Anxiety Disorders in Children and Adolescents with Autistic Spectrum Disorders: A Meta-Analysis. Clinical Child and Family Psychology Review, 2011; 14(3):302-317
Ung, D. et al.
A Systematic Review and Meta-Analysis of Cognitive-Behavioral Therapy for Anxiety in Youth with High-Functioning Autism Spectrum Disorders. Child Psychiatry & Human Development, 2015; 46(4):533-547
Frequently asked questions
- How can I tell if my autistic child has anxiety or if it's "just autism"?
- Look for changes from baseline: increased repetitive behaviours, new avoidance patterns, sleep disruption, physical complaints (stomach aches, headaches), or intensified meltdowns. If these symptoms wax and wane with specific situations or stressors, anxiety is likely contributing. A clinician experienced in both autism and anxiety can conduct a thorough assessment.
- Is standard CBT effective for autistic individuals?
- Standard CBT needs modification for autistic individuals. Effective adaptations include visual supports, concrete examples, integration of special interests, extended session duration, and parent involvement. Research shows that autism-adapted CBT is effective with moderate to large effect sizes. Look for therapists specifically trained in modified CBT for autism.
- Can the OAP cover anxiety treatment for my autistic child?
- Ask your Ontario Autism Program provider and local children's mental health agency what anxiety supports are available. Confirm eligibility, cost, referral steps, and whether the provider adapts care for autism.
Where the waitlist stands
Families navigating autism services in Ontario face a documented multi-year wait. Here is the Ontario data — and a two-minute way to push back, when you are ready.
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