Autism Sensory Issues Explained: Signs, Meltdowns, and Picky Eating

Autism Sensory Issues Explained: Signs, Meltdowns, and Picky Eating

A Complete Guide for Parents in Nigeria

Introduction

If your child covers their ears in a busy market, refuses most foods on their plate, or has sudden, intense meltdowns that leave you exhausted and confused - you are not dealing with a defiant or ' difficult' child. You are most likely dealing with sensory processing challenges, one of the most commonly missed - yet most important - aspects of autism spectrum disorder (ASD).

Research shows that between 69% and 95% of children with autism experience some degree of sensory processing difference.(1,3) In 2013, the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) officially recognised abnormal sensory responses as a core diagnostic feature of autism.(9) Yet many families in Nigeria are still told their child is 'stubborn', 'spoilt', or simply 'not well-behaved'.

This article explains what sensory issues in autism actually are, why they cause meltdowns and picky eating, and - most importantly - what you can begin doing today to make daily life calmer and more manageable for your child and your family.

What Are Sensory Issues in Autism?

Every single moment of every day, your brain is receiving information from the world around you - sounds, textures, smells, tastes, movement, temperature, and light. For most people, the brain quietly filters all of this in the background. For many autistic children, that filtering system works very differently.

Sensory processing refers to the way the nervous system receives sensory information, organises it, and produces a response. When this system is disrupted, a child may react to ordinary, everyday experiences in ways that appear extreme or puzzling to everyone else around them.(7)

There are two broad patterns of sensory difference you will commonly see:

Hypersensitivity (over-responsiveness) - the child reacts intensely to sensory input that most people barely notice. Everyday sounds feel deafening. Clothing tags feel like sandpaper. Certain food textures trigger genuine physical distress.

Hyposensitivity (under-responsiveness) - the child seems to notice less than expected. They may seek out intense sensory experiences such as spinning, crashing into walls, or chewing non-food items to get the stimulation their nervous system craves.

A single child can be hypersensitive in one area (for example, sound) and hyposensitive in another (for example, pain), which is why sensory profiles look so different from one child to the next.(3)

A large study found that 95% of children with autism showed sensory processing dysfunction when assessed using a standardised sensory profile tool.(1)

Common Signs of Sensory Issues in Autism

Below are some of the most common signs that your child's behaviour may be driven by sensory processing differences rather than intentional defiance or wilfulness.

Sound and Auditory Sensitivity

• Covering ears or crying at everyday noises - generators, traffic, a fan, the television
• Distress in places of worship, markets, or large family gatherings
• Seemingly not responding when called, yet reacting intensely to distant sounds

Touch and Tactile Sensitivity

• Refusing certain clothing textures or removing clothes unexpectedly
• Distress during hair washing, nail-cutting, or tooth-brushing
• Reacting strongly to light touch, yet seeking deep pressure (e.g., craving tight hugs)

Food and Oral Sensitivity

• Gagging, retching, or vomiting in response to certain food textures or smells
• Eating from a very narrow range of foods - often smooth, soft, or predictable ones
• Refusing to sit at the table if other family members are eating foods with strong smells

Visual Sensitivity

• Distress under bright or flickering lights
• Fascination with spinning objects, lights, or patterns
• Covering eyes in sunlight or in brightly lit rooms

Movement and Body Awareness

• Constant spinning, jumping, rocking, or crashing into people or furniture
• Appearing clumsy or poorly coordinated in everyday tasks
• Seeking vibration - sitting near fans or placing hands on washing machines

These are not random or attention-seeking behaviours. They are your child's nervous system communicating genuine need.

Please note: Sensory differences are now formally included in the DSM-5 criteria for autism. If your child's sensory reactions are causing significant difficulty in daily life, please speak with a professional experienced in autism assessment.(9)

Understanding Sensory Overload and Meltdowns

A meltdown is not a temper tantrum. It is not manipulation. It is not bad parenting. It is a neurological response - the result of a nervous system that has received more sensory input than it can process at one time.

Research describes this as sensory overresponsivity (SOR) - a pattern in which at least 56% to 70% of children with autism experience severe, involuntary reactions to sensory stimuli that other people barely register.(4) When your child's brain becomes overwhelmed, it loses the ability to regulate behaviour, emotion, or speech. The result is a meltdown.

What Triggers Sensory Overload in Nigeria?

The Nigerian environment is richly stimulating - and for a child with autism, this can be genuinely overwhelming. Common triggers include:

• The sound of generators - unpredictable, loud, and unavoidable
• Busy markets, roadside traffic, and crowded public transport
• Extended family celebrations with loud music, large crowds, and unfamiliar faces
• Church and mosque services - especially with amplified music or drumming
• Bright midday sunlight, especially when outdoors without warning

What a Meltdown Looks Like

Meltdowns can look different in every child. Your child may:

• Cry inconsolably or scream without an obvious immediate cause
• Hit, kick, bite, or scratch - often including themselves
• Shut down completely - going silent, still, or unresponsive
• Run away or try to escape the situation

None of these is wilful. Neurologically, the child is in a state of acute overwhelm - not unlike the panic response in any human being who experiences a genuine threat. The brain's ability to apply brakes and regulate behaviour is temporarily disabled.(7)

What NOT to do during a meltdown:

Do not shout, punish, or physically restrain your child. Do not add more sensory input , no additional talking, no crowds. Your goal in that moment is simply to help your child feel safe, not to teach a lesson.

Picky Eating in Autism: The Real Reason Your Child Refuses Food

This is one of the most distressing challenges many Nigerian families describe. Your child appears to refuse perfectly good food - rice, eggs, beans, meat - while insisting on eating only one or two things. You may have been told to simply stop giving them choices. But this advice misses the point entirely.

Research consistently shows that picky eating in autism is not about taste preference or wilfulness - it is driven by oral sensory sensitivity. The texture, temperature, smell, and even the visual appearance of a food can trigger a genuine physical reaction in an autistic child.(5,6)

How Oral Sensory Sensitivity Works

The mouth is extremely rich in sensory nerve endings. In a child with oral sensory hypersensitivity, the texture of food does not merely feel unpleasant - it can activate the same neural circuits that the brain uses to detect threats.(5) The result is gagging, retching, or complete refusal - a genuine neurological protective response, not deliberate rejection of food.

Why Does My Child Only Eat Soft or Smooth Foods?

Foods that are smooth, predictable, and uniform in texture are far easier for an orally hypersensitive child to manage. This is why many Nigerian children with autism will accept:

• Pap (akamu), custard, or porridge
• Yoghurt or soft purées
• Plain white rice with minimal additions
• Crackers or cereals with a consistent, predictable crunch

Foods like eba, egusi, or stewed meats - which have varied, unpredictable textures - are much more likely to be refused. Children with stronger oral sensitivity tend to eat fewer than 20 different foods in their total diet.(6) This nutritional narrowing has real implications for your child's growth and development, which is why it deserves professional attention.

Research shows that children with autism who have oral sensory sensitivity eat significantly fewer fruits and vegetables, less lean protein, and have a narrower overall nutritional repertoire than autistic children without this sensitivity.(6) This is not about choice - it is a sensory-driven pattern that requires structured, compassionate intervention.

 

Practical Strategies: What You Can Do at Home

While professional support from an occupational therapist or a specialist in autism feeding is the gold standard, here are evidence-informed strategies you can begin implementing at home today.

1. Reduce Sensory Triggers in Your Environment

• Lower the volume on televisions and radios - especially at mealtimes
• Use curtains or blinds to reduce harsh sunlight in areas where your child plays or eats
• Warn your child before exposing them to unavoidably loud environments (such as church). Use noise-reducing ear defenders if possible
• Establish a quiet, low-stimulus corner in your home - a 'safe space' your child can retreat to when overwhelmed

2. Create a Sensory-Friendly Mealtime

• Serve meals in a quiet room with minimal background noise
• Use the same plates, cups, and cutlery each time - consistency reduces anxiety
• Introduce new foods alongside accepted 'safe' foods, without pressure to eat them initially
• Let your child explore new food with their hands or a spoon before being expected to eat it - familiarity through touch reduces refusal over time

3. Modify Food Textures Gradually

• You do not need to eliminate your family's usual meals. You can adapt them:
• Blend stews or soups to a smooth consistency before serving your child's portion
• Mash proteins (e.g., fish, egg) finely before adding to soft carbohydrates like pap or yam
• Introduce slightly varied textures very slowly - over weeks, not days
• Never force-feed. Force increases the negative association with food and worsens refusal

4. Use Sensory Play to Help the Nervous System Regulate

Sensory play - activities that give the nervous system structured, safe input - can help reduce overall sensory hypersensitivity over time.(7)

• Water play in a bucket or bowl (pouring, splashing)
• Play with dry sand, rice, or beans in a container - run hands through them
• Playdough or clay - kneading provides deep pressure to the hands
• Jumping on a mattress or doing heavy work activities (carrying bags, pushing objects)
• Swinging - rhythmic vestibular input is naturally calming for many autistic children

5. Observe Your Child's Sensory Pattern

No two children with autism have the same sensory profile.(3) Begin to observe and record:

• What specific sounds, textures, or environments consistently trigger distress?
• What activities or inputs consistently calm your child?
• What times of day is your child most regulated - and least regulated?
• This personalised sensory map will make every strategy you try more effective, and will be invaluable when you consult a professional.

6. Seek Professional Sensory Support

An occupational therapist (OT) trained in sensory integration therapy can provide a structured, evidence-based sensory diet tailored to your child's unique profile. Systematic reviews of sensory integration intervention in children with autism confirm that it meets criteria as an evidence-based practice.(8) If you are in Nigeria and have limited access to OT services, start with your child's paediatrician and ask for a referral.

The APIN Specialist Directory lists autism-trained professionals in Nigeria, including occupational therapists and developmental paediatricians. Visit autismparentinginnigeria.com to search by location.

 

 For the Nigerian Home

Many families reading this will have heard family members say that their child 'just needs discipline', that prayers will resolve the behaviour, or that the child is simply 'naughty'. These are deeply painful and unhelpful messages - but they come from a lack of information, not from malice.

Sensory processing differences are neurological. They are not the result of upbringing, food eaten during pregnancy, spiritual attack, or a lack of discipline. They are a recognised part of how autism presents in the brain - and they are documented in children across every culture and every continent, including Nigeria.(3)

Understanding this changes everything. Once you understand why your child behaves the way they do, you stop fighting the behaviour - and you start responding to the need beneath it.

You Are Doing Great As A Parent 

Parenting a child with autism sensory challenges is genuinely hard work. Mealtimes can feel like battlegrounds. Public outings can fill you with dread. Family gatherings can end in chaos.

But then:

• Your child is not difficult. 
• Your child's nervous system is working very hard in a world that was not designed with them in mind. Your love, your observation, and your effort to understand are already making a difference.
• Getting the right information, building your knowledge, and connecting with professionals and a supportive parent community are not luxuries - they are necessary tools. You deserve support too.

In Conclusion 

• Sensory processing differences affect between 69% and 95% of children with autism.
• Hypersensitivity (over-reaction) and hyposensitivity (under-reaction) can occur in any sensory channel - sound, touch, taste, smell, vision, or body awareness.
• Meltdowns are not tantrums. They are involuntary neurological responses to sensory overload.
• Picky eating in autism is driven by oral sensory sensitivity - the texture, smell, and appearance of food trigger real distress, not willpower.
• Simple home strategies - reducing triggers, modifying textures, using sensory play - can make a meaningful difference to daily life.
• Occupational therapy with sensory integration training is the gold-standard professional support for sensory challenges in autism.
• You are not failing your child. With the right knowledge and support, progress is absolutely possible.

 

FURTHER READING 

10 Sensory Play Ideas

Nigerian Foods that are sensory friendly 

How to set up a sensory friendly home for your child.

 

Need personalised guidance for your child?

Book an Autism Clarity Call - a 30-minute one-to-one session to help you understand your child's profile and create an action plan.

 

References

1.  Tomchek SD, Dunn W. Sensory processing in children with and without autism: a comparative study using the Short Sensory Profile. Am J Occup Ther. 2007;61(2):190–200.

2.  Nimbley E, Golds L, Johnston L, et al. Sensory processing and eating behaviours in autism: a systematic review. Autism. 2022;26(7):1608–1630.

3.  Dellapiazza F, Michelon C, Oreve MJ, et al. The impact of atypical sensory processing on adaptive functioning and maladaptive behaviors in autism spectrum disorder during childhood: results from the ELENA cohort. J Autism Dev Disord. 2020;50(6):2142–2152.

4.  Cascio CJ, Foss-Feig JH, Heacock JL, et al. Tactile perception in adults with autism spectrum disorders. J Autism Dev Disord. 2012;42(6):1150–1160.

5.  Cermak SA, Curtin C, Bandini LG. Food selectivity and sensory sensitivity in children with autism spectrum disorders. J Am Diet Assoc. 2010;110(2):238–246.

6.  Chistol LT, Bandini LG, Must A, et al. Sensory sensitivity and food selectivity in children with autism spectrum disorder. J Autism Dev Disord. 2018;48(2):583–591.

7.  Kilroy E, Aziz-Zadeh L, Cermak S. Ayres theories of autism and sensory integration revisited: what contemporary neuroscience has to say. Brain Sci. 2019;9(3):68.

8.  Hodis B, Mughal S. Autism spectrum disorder. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2024.

9.  Green D, Chandler S, Charman T, Simonoff E, Baird G. Brief report: DSM-5 sensory behaviours in children with and without an autism spectrum disorder. J Autism Dev Disord. 2016;46(11):3597–3606.

10.  Iovene MR, Bombace F, Maresca R, et al. Intestinal dysbiosis and yeast isolation in stool of subjects with autism spectrum disorders. Mycopathologia. 2017;182(3–4):349–363.