Can you have sensory issues without autism?

A 2025 systematic review and meta-analysis found that people with ADHD score higher than controls across four sensory domains, with large effect sizes and wide variation between studies. Published paediatric guidance describes sensory difficulty as a feature that shows up across autism, ADHD, developmental coordination disorder, and childhood anxiety.

Sensory processing disorder isn’t a standalone diagnosis in DSM-5-TR. A 2012 American Academy of Pediatrics policy advises US pediatricians not to use it as a diagnosis and to evaluate other developmental and behavioural explanations. Sensory differences can inform a diagnostic question, but they don’t answer it or rule autism in or out by themselves.

What the evidence shows about sensory differences in ADHD

The clearest recent evidence comes from a systematic review and meta-analysis published in 2025 in the Journal of the American Academy of Child and Adolescent Psychiatry. After screening 10,750 records, it pooled 30 studies covering 5,374 participants, 23 of them in children and 7 in adults, all comparing questionnaire-measured sensory processing in people diagnosed with ADHD against controls.

People with ADHD scored higher on all four domains measured: sensory sensitivity, sensory avoiding, low sensory registration, and sensory seeking. The standardised mean differences ranged from 1.15 to 1.23, which are large effects (Jurek et al., 2025).

Two qualifications belong next to those numbers. Heterogeneity was high across every analysis, between 87% and 97%, meaning studies disagreed with each other substantially about the size of the effect. And only nine of the 30 studies were rated at overall low risk of bias. The direction of the finding is well supported. The precise magnitude is not.

Those four domains come from Dunn’s questionnaire model, which combines neurological threshold with passive or active self-regulation. Sensitivity and avoiding describe low-threshold patterns; registration and seeking describe high-threshold patterns. They are questionnaire constructs, not diagnoses, and the meta-analysis does not establish why any individual misses an internal cue, stims, or fidgets. People with ADHD scored higher than controls across all four domains.

The evidence base is weighted towards children: 23 of the 30 studies were paediatric and only 7 covered adults. Applying the pooled figures to adults involves an assumption the data doesn’t fully support.

The authors’ own conclusion is worth quoting for what it implies about practice: clinical guidelines for ADHD don’t currently mention assessing sensory processing, and they argue it should be explored systematically in children and adults referred for ADHD.

An earlier study looked at whether this was autism in disguise. It compared sensory profiles in adults with ADHD and found atypical sensory profiles present irrespective of autistic symptoms, which is the specific comparison that matters for this question (Bijlenga et al., 2017).

Sensory differences aren’t specific to any one condition

The American Academy of Pediatrics states the general position directly: difficulty tolerating or processing sensory information is a characteristic that may be seen in many developmental and behavioural conditions, listing autism, ADHD, developmental coordination disorders, and childhood anxiety disorders (Zimmer and Desch, 2012).

Sensory responsiveness also varies in people with no diagnosis at all. Questionnaire measures produce distributions and may apply instrument-specific ranges, but no universally accepted cut-point independently establishes a sensory disorder. Someone can find fluorescent light unbearable, hate certain fabrics, and need silence after a loud day without that experience identifying a particular condition.

What moves sensory differences from a trait to something clinically interesting is consequence: distress, avoidance that restricts life, or recovery costs that eat into work and relationships.

There’s a measurement limitation underneath this evidence. Every study in the 2025 ADHD meta-analysis measured sensory processing with a questionnaire completed by the person, a parent, or another reporter. Those results record noticed and reported behaviour rather than a direct physiological response. Physiological and psychophysical sensory research also exists, so the limitation belongs to this meta-analysis rather than to the entire field.

What the diagnostic label does and doesn’t mean

Sensory processing disorder is used as a descriptive or clinical label in some settings, and it isn’t a standalone diagnosis in DSM-5-TR. Some early-childhood classification systems have included it, so “not in DSM-5-TR” should not be expanded into “recognised nowhere.”

The American Academy of Pediatrics is explicit about its recommendation for children in US paediatric practice. It says it’s unclear whether children presenting with sensory-based problems have a disorder of the brain’s sensory pathways or characteristics associated with other conditions. Because there is no universally accepted diagnostic framework, it advises pediatricians not to use sensory processing disorder as a diagnosis and to complete a thorough evaluation for other developmental and behavioural conditions (Zimmer and Desch, 2012).

The same statement is measured about treatment. Sensory-based occupational therapy may be acceptable as one component of a comprehensive plan, while the research on its effectiveness is described as limited and inconclusive.

This creates a practical distinction worth naming. Sensory needs can be assessed and supported even when clinicians or diagnostic systems describe the underlying category differently. The terminology used in records and access to services varies by profession, service, and jurisdiction.

What is settled and what remains uncertain

Several parts of this question are settled. Sensory differences are measurable, occur across multiple conditions, and are not a standalone DSM-5-TR diagnosis. Sensory-based occupational therapy may be used as one component of a broader plan, while the 2012 AAP policy describes the treatment evidence available at that time as limited and inconclusive.

What remains uncertain is whether sensory-processing difficulties form one standalone disorder with a shared mechanism and universally accepted diagnostic boundary. The evidence cited here does not resolve that question, and professional terminology does not substitute for a validated differential diagnosis.

In practice, one clinician may document a sensory profile while another treats the same observations as features to consider within ADHD, autism, anxiety, coordination difficulties, or another assessment. The useful question is what was measured, what alternatives were evaluated, and what support follows—not whether one label settles the underlying cause.

What sensory differences do and don’t tell you about autism

Sensory differences became part of the autism criteria in DSM-5, where hyper- or hypo-reactivity to sensory input or unusual interest in sensory aspects of the environment sits as one of the four restricted and repetitive features (Robertson and Baron-Cohen, 2017).

That placement is the whole answer to this question. Sensory differences are one of four options under one of two required criteria. Autism also requires persistent differences in social communication and interaction across contexts, present from early development (American Psychiatric Association, 2022).

Sensory differences are more common in autistic groups than in typical comparison groups. An updated meta-analysis of 55 questionnaire studies covering 4,606 autistic participants found large but heterogeneous differences in over-responsivity, under-responsivity, and seeking. Against other clinical groups, only over-responsivity remained significantly different, which limits how specifically a sensory profile points to autism (Ben-Sasson et al., 2019).

More common in autistic people, and present in other groups, is not the same as diagnostic. A trait that appears across several populations can raise a question without settling it.

There’s a further complication that gets skipped. ADHD and autism co-occur often, so finding a sensory profile consistent with either doesn’t separate them. A sensory questionnaire can’t tell a clinician which of the two is present, or whether both are. That work is done by developmental history and the social communication criteria, not by the sensory finding.

Where to take this if you want an answer

Two tracks are worth separating, because they don’t depend on each other.

The sensory track. Sensory needs can be addressed while any diagnostic question stays open. Environment, load, warning, and recovery time are workable regardless of what label eventually applies, and depending on local access an occupational therapist may be able to help without a diagnosis being settled. Our guide to sensory overload covers what that looks like day to day.

Describe it precisely, whichever track you take. Sensory needs can be written down without a label attached: which inputs, in what conditions, with what consequence, and how long recovery takes. That description is useful to an occupational therapist, to an employer considering adjustments, and to a diagnostic assessment later. It’s also the part most likely to be lost if you wait for a diagnosis first.

The diagnostic track. If sensory experiences sit alongside a wider lifelong pattern, an assessment can examine that whole pattern. Social-communication differences and restricted or repetitive features are relevant to autism; persistent inattention and/or hyperactivity-impulsivity are relevant to ADHD. These conditions can co-occur, and no single item in either list separates them.

Whichever direction fits, sensory differences are information to bring, not an answer to arrive with. The NeuroDiversion AuDHD self-reflection is a structured way to get your own examples in order first, and what happens in an adult autism assessment covers the process itself. Neither is a diagnosis, and nothing here replaces a clinician.