Sensory Processing Differences in Children: What Parents Ask Most

Two Main Patterns: Over- and Under-Responsiveness

Sensory differences tend to fall into two broad categories, though many children show both depending on the sense. Over-responsiveness (sometimes called sensory sensitivity or hypersensitivity) means the nervous system reacts strongly to input that others barely notice — for example, a seam in a sock causing intense distress, hand dryers triggering panic, or certain food textures being physically intolerable rather than merely disliked. Under-responsiveness (hyposensitivity) looks like the opposite: a child who seems not to notice pain that would bother most people, who craves intense movement or pressure, or who constantly touches objects and people. A child described as 'sensory seeking' is often under-responsive and trying to get more input. Both patterns can coexist in the same child across different senses.

How Sensory Differences Show Up Day to Day

Common family observations include: extreme difficulty with clothing tags, seams, or specific fabrics; strong aversion to certain food textures or the smell of food; distress at transitions between activities or environments; covering ears frequently; difficulty with haircuts, nail trimming, or toothbrushing; and crashing into furniture, spinning, or seeking deep pressure hugs. In group settings like school or daycare, a child may become overwhelmed in noisy environments, struggle at lunchtime due to food smells and textures, or have difficulty during loud assemblies. What looks like 'bad behavior' or a tantrum is sometimes a nervous system overwhelmed by sensory input.

Sensory Differences and Other Diagnoses

Sensory processing differences are formally included in the DSM-5 diagnostic criteria for autism spectrum disorder — specifically, hyper- or hypo-reactivity to sensory stimulation is listed as a feature that may be present 1Ref 1Multiple authors (2023).Sensory Processing Differences in Individuals With Autism Spectrum Disorder: A Narrative Review of Underlying Mechanisms and Sensory-Based Interventions.DSM-5 inclusion of hyper/hypo-reactivity as an autism diagnostic feature; ~80% prevalence of sensory processing differences in autism; review of sensory-based interventions. Studies estimate that 45–95% of individuals with autism experience significant sensory processing differences 1Ref 1Multiple authors (2023).Sensory Processing Differences in Individuals With Autism Spectrum Disorder: A Narrative Review of Underlying Mechanisms and Sensory-Based Interventions.DSM-5 inclusion of hyper/hypo-reactivity as an autism diagnostic feature; ~80% prevalence of sensory processing differences in autism; review of sensory-based interventions. Sensory challenges also appear frequently in ADHD — research suggests 46–69% of children with ADHD show symptoms of sensory over-responsivity — as well as in developmental coordination disorder and anxiety disorders 2Ref 2CHADD (2024).New Research in Sensory Processing Dysfunction.46–69% of children with ADHD show sensory over-responsivity symptoms; co-occurrence of sensory differences with ADHD and other developmental conditions.

Some children have significant sensory differences without meeting criteria for any of these diagnoses. The important practical point for families is that sensory challenges can be addressed with occupational therapy regardless of whether a formal diagnosis is present.

What Occupational Therapy Addresses

The American Occupational Therapy Association (AOTA) describes occupational therapists with sensory integration training as the primary specialists for children with sensory processing concerns 3Ref 3American Occupational Therapy Association (2023).Sensory Integration Approaches for Children and Youth in Occupational Therapy Practice.AOTA position statement on OT role in sensory processing: sensory diet, direct therapy, parent coaching, and environmental modifications for children with sensory integrative dysfunction. A pediatric OT evaluation typically involves structured observation of how a child responds to different sensory environments and tasks, standardized assessments, and parent/teacher input.

Treatment is individualized and often involves a 'sensory diet' — a set of activities woven into a child's day to help regulate their nervous system — as well as direct therapy targeting specific functional challenges. OTs also work with families on practical accommodations for home and school: clothing strategies, mealtime modifications, noise-reducing tools, and environmental adjustments 3Ref 3American Occupational Therapy Association (2023).Sensory Integration Approaches for Children and Youth in Occupational Therapy Practice.AOTA position statement on OT role in sensory processing: sensory diet, direct therapy, parent coaching, and environmental modifications for children with sensory integrative dysfunction.

Helping at Home While Waiting for Services

Families often wait weeks or months for OT availability. In the meantime, identifying the most impairing sensory triggers and reducing unavoidable exposure can ease daily stress. For clothing sensitivity, seamless or reversible clothing is widely available. For sound sensitivity, noise-cancelling headphones designed for children can be used in high-stimulus environments. For food texture challenges, consistent, calm exposure over time tends to be more effective than pressure. Predictable routines help children with transitions. A pediatrician can provide a referral for OT and sometimes can offer guidance on immediate accommodations while the child waits to be seen.