Direct answer
Ben-Sasson, A. et al. · Schoen, S.A. et al. · Verified 2026-08-10
Quick summary
In brief
Key points
Prevalence and Sensory Profiles
The most commonly affected domains are auditory processing (hypersensitivity to noise), tactile processing (aversion to textures or touch), and proprioceptive processing (difficulties with body awareness and movement planning).
Autistic individuals typically show a mixed sensory profile rather than uniform hyper- or hyposensitivity. A child might be hypersensitive to sounds (covering ears in noisy environments) while simultaneously seeking proprioceptive input (crashing into furniture, seeking deep pressure). Understanding the individual's specific sensory profile is essential for effective intervention and accommodation.
The Sensory Profile 2 (Dunn, 2014) is the most widely used assessment tool in Ontario. It maps an individual's responses across four sensory processing patterns: seeking, avoiding, sensitivity, and registration. This profile guides intervention planning and environmental modifications.
Evidence-Based Interventions in Ontario
Occupational therapy may help with sensory processing differences. Ask whether the therapist uses a sensory integration approach, how goals are measured, and what evidence supports the plan.
Environmental modifications are equally important and often more immediately impactful. These include: noise-reducing headphones for auditory sensitivity, weighted blankets or vests for proprioceptive input, fidget tools for sensory seeking, modified lighting for visual sensitivity, and designated quiet spaces for sensory breaks.
In Ontario, ask about occupational therapy through the Ontario Autism Program, school boards, community clinics, and Children's Treatment Centres. Publicly funded waits vary by provider and region.
Evidence and sources
Ben-Sasson, A. et al.
Update of a Meta-Analysis of Sensory Symptoms in ASD. Journal of Autism and Developmental Disorders, 2019; 49(4):1621-1636
Schoen, S.A. et al.
Systematic review of Ayres Sensory Integration intervention for autistic children (Schoen et al.)
Frequently asked questions
- Is sensory processing disorder a separate diagnosis from autism?
- Sensory processing disorder (SPD) is not a standalone diagnosis in the DSM-5 or ICD-11. In autistic individuals, sensory differences are considered part of the autism diagnosis under the criterion "hyper- or hypo-reactivity to sensory input." However, the clinical presentation requires specific assessment and intervention regardless of diagnostic categorization.
- Will my autistic child's sensory sensitivities improve with age?
- Sensory profiles often shift over time. Some sensitivities may decrease with maturity, intervention, and accommodation strategies, while others may persist or new patterns may emerge, particularly during puberty. Most autistic adults continue to experience sensory differences but develop coping strategies that improve daily functioning.
- Can my child get a sensory room at school in Ontario?
- Many Ontario schools provide sensory spaces or quiet rooms, particularly schools with Autism Spectrum Disorder classes. For students in regular classrooms, sensory accommodations can be documented in the Individual Education Plan (IEP). Request a school-based OT consultation to recommend specific environmental modifications for your child.
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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