Sensory Processing Disorder: Signs, Subtypes, and Support

What are the eight sensory systems?

Most people are taught five senses. Sensory processing frameworks describe eight.

The last three are sometimes called the hidden senses, because they operate without conscious attention until something goes wrong. Interoception is the most recently recognized and the least covered in general sensory resources — which is why a child can have a thorough sensory profile that never addresses it.

Explore eachvestibular and proprioceptive processinginteroceptionvisual processingauditory processing

What are the patterns of sensory processing disorder?

Sensory processing difficulties are usually grouped into three patterns, each with subtypes.

Sensory modulation differences — difficulty regulating responses to input:

• Over-responsivity — ordinary input feels too intense
• Under-responsivity — input doesn't register, or registers slowly
• Seeking and craving — actively pursuing intense input

Sensory discrimination difficulties — difficulty telling similar sensations apart. More on discrimination

Sensory-based motor difficulties — sensory input not supporting movement effectively:

• Postural difficulties — core stability, balance, endurance
• Dyspraxia — planning and sequencing new movements

Most people don't fit one box. Mixed profiles are the norm — a child may be over-responsive to sound, under-responsive to pain, and seek movement, all at once.

What are the signs of sensory processing disorder?

Not a checklist. No number of items confirms anything, and every child shows some of these sometimes.

• Sound — covering ears at ordinary noise, distress at hand dryers or vacuum cleaners; or the reverse, not responding to their name
• Touch — distress at clothing seams, tags, haircuts, nail cutting, messy play; or not noticing injuries
• Movement — avoiding swings and climbing, or seeking constant motion, spinning, crashing
• Body position — bumping into things, using too much or too little force, poor posture, W-sitting
• Taste and texture — a very narrow range of accepted foods, gagging at textures
• Light and visuals — distress in bright or busy environments, difficulty finding things in a cluttered space
• Internal signals — not noticing hunger, thirst, or the need for a bathroom until urgent; difficulty identifying emotions
• Across all of them — meltdowns after school, difficulty with transitions, exhaustion in busy environments

Relatedsigns in childrenin teensin adults

How does SPD affect daily life?

Sensory processing differences tend to show up in three areas of everyday life, which is often what prompts a family to seek help:

• Learning. A child spending energy filtering an overwhelming classroom — noise, lights, movement — has less left for focus, so difficulty can look like inattention rather than sensory load.
• Behavior. Distress from misprocessed input can drive meltdowns, avoidance, or seeking that gets read as misbehavior rather than a response to sensation.
• Social interaction. Difficulty tolerating or interpreting the sensory side of social settings — busy rooms, unpredictable touch, background noise — can make friendships and group activities harder.

This is also the argument for not waiting: addressing sensory differences early can reduce the secondary costs that build up when a child is repeatedly misread — including low self-esteem and academic struggle.

Is SPD a formal diagnosis?

Not as a standalone condition. SPD does not appear in the DSM-5 or ICD-11 as its own diagnosis⁠³. This is worth understanding, because it has real practical consequences: you generally can't get "an SPD diagnosis" the way you'd get an autism or ADHD diagnosis; what you can get is an occupational therapy sensory assessment, producing a sensory profile and a treatment plan; and whether insurance pays for the therapy depends on the plan’s own written policy (how coverage works).

What has changed. Sensory features appear in both current autism manuals: the DSM-5 added hyper- or hyporeactivity to sensory input in 2013, and ICD-11 followed in 2022. Together they are the most significant formal recognition sensory processing has received.

Why the standalone status is debated. Some researchers and clinicians argue the evidence supports SPD as a distinct condition; others hold that sensory differences are better understood as a feature of conditions like autism and ADHD, or as normal variation that becomes disabling in poorly matched environments. Neuroimaging research has found differences in white matter microstructure in children identified with SPD, though those studies involve small samples.⁠⁴

None of this means the difficulties aren't real. Diagnostic categories are administrative tools. A child who cannot tolerate a school cafeteria has a real problem regardless of which manual recognizes it.

Morehow sensory processing is assessedcauses and risk factors

How common is it?

You will see two numbers quoted for this, around 5% and around 16%. They come from two studies that measured different things, which is why they sit so far apart.

Ahn, Miller, Milberger and McIntosh (2004)⁠¹ surveyed parents of kindergarten children. 13% reported significant sensory challenges; adjusted for a 40% response rate, the authors estimated around 5% in a community sample. This is parent-perceived, not clinically confirmed.

Ben-Sasson, Carter and Briggs-Gowan (2009)⁠² studied a community cohort of elementary-school children (ages 7–11) in Connecticut. Around 16% reported symptoms of sensory over-responsivity — and it commonly occurred in children with no other mental health diagnosis. This measures over-responsivity specifically, not all sensory processing difficulties.

So "5–16% of children have SPD" is an oversimplification of two different measurements. The honest version: somewhere between roughly one in twenty and one in six children experience sensory differences significant enough to affect daily life, depending on how you define and measure it.

How is sensory processing disorder diagnosed?

It is not, in the sense of a diagnostic code — there is no SPD diagnosis in either manual. What happens instead is an occupational therapy assessment: standardized questionnaires completed by parents and teachers, structured observation, and a report describing which sensory systems respond differently and what to do about it. How SPD is assessed covers who does it, what it costs, and what you get at the end.

If you are at the earlier stage of wondering whether any of this applies, the SPD screening quiz takes a few minutes, and the sensory seeking versus avoiding quiz sorts out which pattern you are looking at. Neither returns a diagnosis, and nothing on the internet should.

What helps with sensory processing disorder

Three components, and a good plan uses all three:

Direct therapy — occupational therapy, typically weekly or more often. Ayres Sensory Integration is the approach a 2025 systematic review of nine randomized trials found to help autistic children reach individualized goals, on strong evidence⁠⁶. → Sensory integration therapy and the evidence

Environmental modification — changing the surroundings rather than the child. Thinly studied, but cheap and low-risk, and for an over-responsive child most of the plan.⁠⁵

Home and school strategies — advance warning before transitions, movement breaks, predictable routines, adjustments to clothing and food. This operates all week rather than for one hour of it.

What has the strongest evidence: deep pressure tactile input, and training caregivers in sensory strategies. Neither requires buying anything.⁠⁵

What has weak or no evidence: weighted vests and blankets, brushing protocols, and sound therapies have been repeatedly found to have little or no effect on the outcomes claimed.

RelatedFull treatment guidesensory diet strategiesliving with SPDRoom-by-room sensory-friendly home checklist

What conditions occur alongside SPD?

Sensory processing differences frequently occur alongside other conditions, and rarely in isolation.

Anxiety is the most common of these, and the hardest to separate from a sensory difficulty by watchingis it sensory or is it anxiety?

Ehlers-Danlos syndrome and other hypermobility conditions co-occur more often than chance. The overlap between ADHD and sensory processing is set out in ADHD vs sensory processing disorder.

Frequently Asked Questions

Find a therapist who works with sensory processing

Practices in the DrSensory directory that name sensory processing or sensory integration among the services they offer, grouped by state.

Each practice appears here because its own listing names this among what it treats. A listing is not an endorsement or a referral, and inclusion does not mean we have verified a practice’s credentials, licensure or insurance — check those directly.

Browse all occupational therapy practices

Sources

1. Ahn RR, Miller LJ, Milberger S, McIntosh DN. Prevalence of parents’ perceptions of sensory processing disorders among kindergarten children. American Journal of Occupational Therapy. 2004;58(3):287–293. doi:10.5014/ajot.58.3.287 (PMID 15202626). 13.7% of the children represented were reported as having sensory difficulties; against the full enrollment the conservative estimate was 5.3%.
2. Ben-Sasson A, Carter AS, Briggs-Gowan MJ. Sensory over-responsivity in elementary school: prevalence and social-emotional correlates. Journal of Abnormal Child Psychology. 2009;37(5):705–716. doi:10.1007/s10802-008-9295-8 (PMID 19153827). In a representative birth-cohort sample, elevated sensory over-responsivity was present in 16.5% of children aged 7–11.
3. World Health Organization. ICD-11, 6A02 Autism spectrum disorder. Effective January 2022. Sensory features are part of the autism criteria; sensory processing disorder does not appear as a standalone diagnosis.
4. Owen JP, Marco EJ, Desai S, Fourie E, Harris J, Hill SS, Arnett AB, Mukherjee P. Abnormal white matter microstructure in children with sensory processing disorders. NeuroImage: Clinical. 2013;2:844–853. doi:10.1016/j.nicl.2013.06.009 (PMID 24179836). Diffusion tensor imaging in 16 boys aged 8–11 with SPD and 24 matched controls; reduced fractional anisotropy primarily in posterior white matter.
5. Piller A, McHugh Conlin J, Glennon TJ, et al. Systematic review of sensory-based interventions for children and youth (2015–2024). Frontiers in Pediatrics. 2025;13:1720179. PMID 41321460. Twenty-one controlled studies. Strong evidence for deep pressure tactile input and for caregiver training in sensory strategies; too few studies to rate environmental modification. doi:10.3389/fped.2025.1720179
6. Acuña C, Gallegos-Berrios S, Barfoot J, Meredith P, Hill J. Ayres Sensory Integration With Children Ages 0 to 12: A Systematic Review of Randomized Controlled Trials. American Journal of Occupational Therapy. 2025;79(3):7903205180. PMID 40193295. Nine randomized trials, 344 participants, six trials with autistic children. “Strong evidence from five RCTs (four Level 1b) indicates that ASI supports autistic children in meeting their individualized goals.” “Moderate evidence from three RCTs (two Level 1b) indicates no benefits of ASI for behaviors of concern, such as noncompliance or irritability.” doi:10.5014/ajot.2025.051023

Medical disclaimer. This page is for general educational purposes and does not constitute medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider about your child.