Some children seem to live in a world that is too loud, too bright and too scratchy. Others hardly notice a scraped knee or their name being called, and some can never get enough spinning, jumping and crashing. When reactions like these are strong and get in the way of everyday life, they may point to a sensory integration disorder. This article lists the typical symptoms sense by sense, explains how they differ from ordinary quirks and from autism, and shows when and where to get an evaluation.
What Sensory Integration Disorder Means
Sensory integration is the brain’s job of organizing information from the body and the environment so that we can respond appropriately. Most children do this automatically from birth: they get used to the feel of clothes, filter out background noise and learn how hard to throw a ball. Children with sensory integration difficulties need extra effort for what comes naturally to others. They may over-react, under-react or constantly seek sensations.
Sensory processing disorder is not a separate diagnosis in the DSM-5. The American Academy of Pediatrics (AAP) advises looking at sensory symptoms as part of a broader evaluation, since they often appear together with autism, ADHD, anxiety or developmental delays.
Symptoms Sense by Sense
Touch (tactile)
- pulls away from light or unexpected touch, including hugs and pats on the back
- complains about clothing tags, seams, certain fabrics or tight waistbands
- resists hair washing, haircuts, nail cutting and tooth brushing
- avoids messy materials such as glue, paint, sand, lotion or foods with sauce
- or, the opposite: touches everything, does not notice cuts or bruises
Mouth and food (oral)
- gags easily, refuses whole groups of foods because of texture
- eats a very limited diet, often soft or crunchy foods only
- or chews constantly on shirts, sleeves, pencils and toys
Hearing (auditory)
- covers ears or panics at hand dryers, vacuum cleaners, blenders, sirens or fire drills
- is overwhelmed in noisy rooms such as the cafeteria or gym
- or seems not to hear instructions, while a hearing test is normal
- has trouble telling similar sounds and words apart
Sight (visual)
- squints or gets upset in bright light or under flickering fluorescent lights
- is distracted by every movement in the room
- has trouble finding objects among others, following a line of text or copying from the board
Movement and balance (vestibular)
- fears swings, slides, escalators and having the feet off the ground
- gets carsick easily, dislikes being tipped backward
- or spins, rocks and jumps for long periods without getting dizzy
- has poor balance and posture, tires quickly when sitting upright
Body awareness (proprioceptive)
- holds a pencil too tightly or too loosely, presses so hard that the paper tears when erasing
- slams doors, hugs too hard, plays roughly without meaning to
- bumps into people and furniture, seems unaware of where the body is in space
Motor planning and coordination
- has difficulty with buttons, zippers, snaps and shoelaces
- struggles with scissors, small objects and puzzles
- learns new movements slowly, such as pedaling, skipping or catching a ball
- seems clumsy and falls more often than other children
Inner body signals (interoception)
- does not seem to notice hunger, thirst, heat or cold
- has toilet accidents beyond the usual age because the urge is noticed too late
Quirk or Real Problem?
Almost every child has a few of these traits. A child who hates turtlenecks or loves the merry-go-round is not automatically affected. Three questions help sort it out:
- Intensity: is the reaction much stronger or weaker than in other children of the same age?
- Frequency: does it happen every day or in many situations, not just once in a while?
- Impact: does it keep the child from eating enough, sleeping, learning, making friends or taking part in family routines?
If the answer to all three is yes, an evaluation is worthwhile.
Sensory Integration Disorder and Autism
Sensory symptoms are so common in autism that they are part of its diagnostic criteria, which is why the two are often confused. The difference is that autism also involves persistent differences in social communication and interaction, such as limited back-and-forth conversation, difficulty reading facial expressions or trouble building friendships, plus restricted or repetitive behaviors. A child with sensory difficulties alone usually seeks contact and connects with others, even if crowded places are hard. Only a professional evaluation can tell the two apart, and some children have both.
When to See the Pediatrician Promptly
Some signs need medical attention soon rather than a wait-and-see approach:
- loss of words or skills the child already had, at any age
- no babbling by 12 months, no single words by 16 months or no two-word phrases by 24 months
- weight loss or a diet so limited that growth is affected
- sudden changes in behavior, balance or coordination
The CDC’s free “Learn the Signs. Act Early.” milestone checklists help parents track development and prepare for the visit.
How an Evaluation Works
- Pediatric visit: review of development, sleep, feeding and behavior, plus screening for autism and other conditions.
- Hearing and vision tests: these must be done before sound or sight reactions are attributed to sensory processing.
- Occupational therapy evaluation: parent and teacher questionnaires such as the Sensory Profile 2, standardized motor tests and observation of play.
- Plan with goals: a few specific, measurable goals tied to daily life, reviewed after a set period.
For children under three, the state’s early intervention program under Part C of the Individuals with Disabilities Education Act (IDEA) provides a free evaluation, and parents can make the referral themselves. From age three, the local school district evaluates children whose difficulties affect learning.
Frequently Asked Questions
Can sensory symptoms be the only problem?
Yes, some children have sensory difficulties without another condition. Often, though, they occur together with autism, ADHD, anxiety or developmental delays, which is why a full evaluation matters.
Who diagnoses sensory integration problems?
The pediatrician coordinates the evaluation and rules out other causes; a pediatric occupational therapist assesses sensory processing and motor skills in detail.
Can symptoms change as a child grows?
Yes. Many children cope better as they mature and learn strategies, while new challenges can appear at school age, for example with handwriting or noisy classrooms.
What can parents do right away?
Keep a short log of triggers and reactions, give warnings before loud or unpleasant events, offer comfortable clothing and quiet breaks, and share the observations with the pediatrician.
