At what age do signs of sensory processing issues typically appear?

Signs of sensory processing differences can be observed from very early infancy — some parents describe their child as being a "difficult baby" who was hard to settle, hypersensitive to noise, or resistant to being held. However, many sensory challenges become more apparent between the ages of two and five, when children are expected to participate in a wider range of social and learning environments. The canteen at school, birthday parties, and playgroups can all be environments where sensory differences become more visible. The most important thing is not to wait — if you have concerns, seek an OT assessment as early as possible, as early intervention is associated with better outcomes.

Can a child have sensory issues without having autism or ADHD?

Yes, absolutely. Sensory processing differences occur across the population, not only in children who also have autism or ADHD. Research estimates that sensory processing challenges affect up to 1 in 6 children to a degree that impacts daily functioning, and the majority of these children do not have an autism spectrum disorder or ADHD diagnosis. Sensory processing differences can occur in children who are otherwise neurotypical, as well as those with other developmental differences such as developmental coordination disorder (DCD/dyspraxia), anxiety disorders, or speech and language delays.

When should I see an OT about my child's sensory issues?

Consider seeking an OT assessment if: your child's sensory reactions are disproportionate to the trigger and significantly more intense than their peers; sensory responses are affecting daily functioning, learning, or relationships; meltdowns are frequent and linked to identifiable sensory triggers; your child avoids a wide range of ordinary activities due to sensory discomfort; or their sensory-seeking behaviour is putting them or others at risk of injury. Your GP can provide a referral, and you may be eligible for Medicare rebates through a Chronic Disease Management Plan.

What is the difference between sensory meltdowns and tantrums?

Understanding this difference is one of the most important things parents of sensory-sensitive children can do. A tantrum is a purposeful behaviour — the child wants something and is trying to influence your response. Tantrums typically stop when the desired outcome is achieved, and the child has some awareness and control of their behaviour. A sensory meltdown, by contrast, is an involuntary neurological response to sensory overload. The child has lost control of their nervous system and cannot calm down through logic or consequence. Meltdowns require sensory-based regulation strategies — removing triggers, providing calming input, reducing demands — not behavioural consequences.

What are the first steps after recognising signs of sensory issues in my child?

Start by keeping a diary of your child's sensory responses over one to two weeks — note what triggers reactions, how intense the reactions are, and what seems to help. Then take this information to your GP, who can refer you to a paediatric occupational therapist. While waiting for the OT assessment, you can begin implementing some general sensory-regulation strategies: ensuring regular movement breaks, providing heavy work activities before demanding tasks, reducing unnecessary sensory triggers in the home environment, and using sensory tools such as fidget toys or noise-cancelling headphones where appropriate. Our guide on creating a sensory diet has practical strategies you can start using immediately.

10 Signs of Sensory Issues in Children — What to Look For

Why Recognising Sensory Signs Matters

Sensory processing differences affect up to 1 in 6 children to a degree that impacts their daily functioning. Yet because many of the signs look like "bad behaviour," wilfulness, or fussiness, they are frequently misunderstood — by parents, teachers, and even health professionals. A child who covers their ears at assembly is not being dramatic. A child who refuses to wear certain clothing is not being difficult. A child who lashes out when bumped in the corridor is not being aggressive on purpose. Understanding the sensory basis of these behaviours is the first step toward effective support.

The following 10 signs are among the most common indicators that a child may have sensory processing challenges. While no list can replace a professional assessment, recognising these patterns can help you take the right next steps.

Sign 1: Frequent and Intense Meltdowns

Meltdowns that seem disproportionate to the apparent trigger — triggered by seemingly small things like a change in routine, a loud sound, or a food touching another food on the plate — are one of the most common signs of sensory processing difficulties. Unlike tantrums, sensory meltdowns are not purposeful: they are an involuntary neurological response to a nervous system that has been overwhelmed. The child has no control over the meltdown once it starts, and they often feel distressed and exhausted afterwards. Patterns are key — if meltdowns consistently occur in busy, loud, or unpredictable environments, sensory overload is a likely contributor.

Ages most commonly seen: Toddlers through to school age; may persist into adolescence without support.

Sign 2: Extreme Clothing Sensitivity

Many children with tactile hypersensitivity have intense reactions to clothing. This can manifest as distress about sock seams, refusal to wear anything but soft, seamless fabrics, inability to tolerate jeans or denim, insistence on wearing the same outfit every day because it feels safe, or distress about tight waistbands, labels, and collars. This is not fussiness — the tactile system of these children registers ordinary clothing as genuinely uncomfortable or even painful. Seamless socks, tagless clothing, and sensory-friendly garment options (such as those from Australian brand Jettproof) can make a significant practical difference.

Ages most commonly seen: From toddler age onwards.

Sign 3: Extreme Picky Eating Related to Texture

While many young children go through phases of selective eating, children with sensory processing differences often have picky eating that extends well beyond toddlerhood and is driven specifically by texture, temperature, or smell rather than taste alone. They may gag on mixed textures (casseroles, soups), refuse any food that has come into contact with another food, or have an extremely limited safe food list that doesn't change. This is recognised as sensory-based feeding difficulty and warrants assessment by a feeding specialist OT or speech pathologist.

Ages most commonly seen: Toddler through to older childhood; may persist into adulthood without intervention.

Sign 4: Strong Reactions to Loud or Unexpected Sounds

Auditory hypersensitivity (over-responsiveness to sound) is one of the most frequently reported sensory challenges. Children may cover their ears at sounds others find unremarkable — hand dryers in public bathrooms, the school bell, crowd noise at a sporting event, or even the sound of other people chewing. In more severe cases, the child may refuse to attend events with unpredictable noise, show significant anticipatory anxiety before loud environments, or melt down immediately upon entering a noisy space. Noise-cancelling headphones are one of the most effective and accessible tools for managing this challenge.

Ages most commonly seen: Any age, often first noticed in busy school environments.

Sign 5: Craving Deep Pressure

Children who crave deep pressure — tight hugs, being squashed under heavy blankets, wearing very tight clothing, pressing into corners or small spaces — are seeking proprioceptive input that their nervous system is not getting enough of. This is a sign of proprioceptive under-responsiveness or seeking. The craving for deep pressure is one of the most reliable indicators that weighted products (weighted blankets, lap pads, compression vests) may be helpful, as they provide the deep pressure input the nervous system is seeking in a safe, consistent way.

Ages most commonly seen: Toddler through to adulthood; very common in autistic individuals and those with ADHD.

Sign 6: Poor Body Awareness and Clumsiness

Children with proprioceptive processing difficulties often appear clumsy — they trip frequently, misjudge distances, knock things over, use too much or too little force, and may have difficulty with fine motor tasks like handwriting. They may not know where their body is in space without looking, making activities like dressing, navigating through doorways, or participating in sports challenging. This is distinct from general developmental clumsiness and warrants OT assessment, as it often significantly impacts school participation and self-esteem.

Ages most commonly seen: Often more apparent from age 3–4 when peer comparisons become more obvious.

Sign 7: Constant Seeking of Movement

Children who are vestibular-seeking have a nervous system that craves movement input. They may rock in their chair, spin constantly, run when walking is expected, hang upside down, seek rough-and-tumble play, be unable to sit still for more than a few seconds, or become distressed when required to remain seated. This looks very similar to ADHD hyperactivity, which is one reason accurate assessment is important. Providing regular movement breaks, wobble cushions, and opportunities for legitimate movement can significantly reduce this pattern.

Ages most commonly seen: Often most apparent in early school years when sitting requirements increase.

Sign 8: Avoiding Touch or Physical Contact

Some children with tactile hypersensitivity are acutely uncomfortable with unexpected or light touch. They may avoid hugs and physical affection, become distressed when accidentally bumped in the playground, refuse to hold hands, or position themselves at the edge of groups to avoid contact. This is not rejection of the person — it is the nervous system registering light touch as threatening. These children may actually tolerate or seek deep pressure (firm hugs) far better than light touch. Understanding this distinction helps caregivers offer physical comfort in a way the child can accept.

Ages most commonly seen: Any age; may be first noticed in nursery or early childcare settings.

Sign 9: Becoming Overwhelmed in Busy Places

Supermarkets, shopping centres, school canteens, birthday parties, and public transport are common environments where children with sensory processing differences struggle. The combination of multiple simultaneous sensory inputs — noise, movement, crowds, strong smells, unpredictable touch — can overwhelm a nervous system that lacks the capacity to filter and organise this input. The result may be a meltdown, shutdown (the child goes very quiet and withdrawn), or severe anxiety. Planning ahead (quiet times, noise-cancelling headphones, exit strategies) and understanding the trigger pattern can help enormously.

Ages most commonly seen: Any age; often first recognised in toddlerhood or early primary school.

Sign 10: Unusually High or Low Pain Threshold

A significantly elevated pain threshold — the child doesn't seem to notice injuries that should hurt — or an unusually low pain threshold — extreme distress from minor bumps or scrapes — can both indicate sensory processing differences. Under-responsive children may injure themselves without realising it and require careful supervision. Over-responsive children may experience significant distress from medical procedures, haircuts, or minor physical discomfort that makes routine health care very challenging.

Ages most commonly seen: Any age; may be first identified during medical appointments or play observations.

What to Do Next

If you have recognised three or more of these signs in your child, it is worth seeking a professional assessment. Start by speaking with your GP, who can refer you to a paediatric occupational therapist. You can also speak directly to your child's early childhood educator or school teacher about what they observe in the classroom setting.

In the meantime, explore our resources on creating a sensory diet and browse our sensory tools guide for practical, OT-recommended tools that many Australian families use at home while awaiting formal assessment and support.