Postural Disorder in Children: Signs, Causes, Support

Sensory processing difficulties are described within occupational therapy practice frameworks rather than diagnostic manuals. Sensory processing disorder is not a standalone diagnosis in the DSM-5 or ICD-11, so this describes a pattern rather than a formal diagnostic category. Since 2022, ICD-11 has included sensory processing differences within the diagnostic criteria for autism.

What is postural disorder in children?

Postural disorder is difficulty with balance and core stability, and in the classification proposed for sensory processing problems it is one of two sensory-based motor disorders, alongside dyspraxia.⁠^3,4 This page calls it postural difficulties, the plainer phrase.

Staying upright and stable against gravity should be close to automatic, freeing attention for everything else. When postural control is harder, a child spends real effort just holding their body — and that effort has to come from somewhere.⁠¹

What does postural disorder look like at home and at school?

Slumping at a desk, propping the head on a hand, leaning on walls and furniture, tiring quickly in physical activity, avoiding climbing and playground equipment, W-sitting or wrapping legs around chair legs for extra stability, and generally seeming "floppy" or low-energy. See W-sitting and hypotonia.

At school that means the desk, the carpet and PE; at home, the dinner table, the sofa and the playground. Among children with developmental coordination disorder, impaired postural control and balance are part of the documented motor picture.⁠²

Is postural disorder mistaken for laziness or poor attention?

No, though it is often mistaken for laziness, poor attention, slouching as a bad habit, or disinterest. The reframe that matters: postural work competes with attention. A child spending effort staying upright has less left for the lesson — so what looks like not listening may be a body working hard to sit still.

Postural disorder vs postural insecurity vs low muscle tone

Postural disorder is trouble keeping the body balanced and stable;⁠³ “postural insecurity” is not one of the classification’s named subtypes, and when the phrase describes a child who is afraid of movement, the sensory integration literature calls that gravitational insecurity;⁠^3,5 low muscle tone, or hypotonia, is a different finding again, with its own page.

Three things that can look alike
	What it is	What you might see
Postural disorder	A sensory-based motor problem with balance and core stability⁠³	Slumping, propping, leaning, tiring quickly
Gravitational insecurity (what “postural insecurity” often describes)	Fear and avoidance of movement; classed as a sensory modulation problem because of the emotional reaction⁠⁵	Reluctance to tip the head back or somersault, sensitivity to motion such as cars turning corners, fear of losing balance on uneven ground or play equipment; refusing to climb, swing, skate or bike⁠⁵
Low muscle tone (hypotonia)	A finding about the muscles themselves	See the hypotonia page

The first two can look identical on a playground: a child hanging back from the climbing frame. One is unsteady and the other is afraid, and occupational therapists trained in Ayres Sensory Integration routinely assess the fearful pattern.⁠⁵ An assessment is how you find out which you are looking at.

What causes postural disorder in children?

Usually there is no single identifiable cause: postural difficulty is described as a sensory-based motor problem and is part of the motor picture in developmental coordination disorder, which is itself idiopathic, while medical conditions that can look similar are ruled out first.⁠^3,2,1

That ruling-out is a real step. International guidance on coordination difficulties lists what a clinical examination should cover: neurological status, medical status (for example obesity, hypothyroidism, genetic syndromes, malnutrition or joint problems), sensory status including vision and vestibular function, other neurodevelopmental conditions, and observation of play, drawing and dressing.⁠¹ A diagnosis of coordination disorder also requires that the motor difficulty is not better explained by another condition.⁠¹

How do OTs and PTs assess posture and core stability?

By taking a history from parents and teachers, watching the child move and hold positions during real tasks, and using standardized motor tests that include balance, most often the Movement Assessment Battery for Children (MABC-2) or the Bruininks-Oseretsky test (BOT-2).⁠¹

The MABC-2 covers ages 3 to 16 in eight tasks, three of them balance tasks, alongside manual dexterity and aiming and catching.⁠¹ The history matters as much as the test: the guidance asks for information on self-care, school productivity, play, leisure and sport, gathered from the child, parents, teachers and other professionals.⁠¹ Under age 5, a formal diagnosis of coordination disorder is recommended only for severe difficulty, confirmed on two assessments at least three months apart, because motor development varies so much at that age.⁠¹

What helps a child with postural disorder?

Support builds strength and stability through play — climbing, animal walks, heavy work — and adjusts seating and positioning so staying upright costs less (supportive chairs, footrests, movement breaks). The goal is participation, not "core strength" as an end in itself.

The evidence points the same way. Guidance on coordination difficulties recommends approaches built around the activities themselves, gives children plenty of opportunity to practice movement skills at home, at school and in sport, asks that physical fitness be part of planning, and asks therapists to advise parents and teachers on how to help.⁠¹ Sensory integration therapy is a different matter: the American Academy of Pediatrics says research on it is limited and inconclusive, that it may be acceptable as one part of a wider plan, and that families should agree a trial period and a way to judge whether it works.⁠⁶

What can therapy change in postural control, and what not?

Postural difficulty is usually addressed alongside coordination difficulty, and the evidence base sits mostly under developmental coordination disorder.

A meta-analysis of 32 studies of motor-based intervention in DCD found a large improvement in standardized motor test scores and in what children could do, and no improvement in participation or in psychosocial outcomes.⁠² Task-oriented approaches — practicing the actual activity rather than training the underlying component — performed best on motor skills and balance.

The practical read for postural difficulty. Working directly on sitting at a desk, or carrying a tray, or staying upright through a lesson, has better support than exercises aimed at "core strength" in the abstract and hoping it carries over into the school day.

The same guidance is blunt about the limits: approaches aimed at underlying body functions have limited evidence of improving everyday activity, and the evidence for sensory integration therapy in coordination disorder is inconclusive.⁠¹

This is not solved by getting stronger

Holding the body steady against gravity is a control problem, not a power problem. A child can be strong and still slump, because the difficulty is in the continuous, automatic adjusting rather than in the muscle.

When to seek an assessment for postural disorder

Consider an occupational therapy assessment if the pattern interferes with daily life — school, friendships, self-care, or family routines — or if you're unsure what you're seeing. You don't need to be certain something is wrong to ask; that's what the assessment is for. If a child loses skills they previously had, contact their doctor promptly — regression warrants medical evaluation regardless of anything else.

Either an occupational therapist or a physical therapist can assess posture and balance; for a child whose difficulty is mostly gross motor (balance, playground, sport), a pediatric physical therapist is a natural first call, and you can find one near you. When posture comes with trouble planning new movements, our page on motor planning and the one on sensory-based motor disorder cover the overlap.

Frequently Asked Questions

Why does my child W-sit?

W-sitting gives a wide, stable base that requires less core control. It's common with postural difficulties. See the W-sitting page for whether and when it matters.

Is slumping just a bad habit?

Not always. If staying upright is genuinely effortful, slumping is the body conserving energy — and telling a child to sit up straight doesn't address the underlying difficulty.

What causes postural difficulties?

Reduced core stability, low muscle tone, and differences in how movement and balance information is used can all contribute. An OT or PT can assess the specific picture.

Is poor posture the same as being lazy or slouchy?

No, and reading it that way is the most common mistake. Holding the body upright against gravity takes continuous muscular work, and a child who finds that work harder will look for something to lean on. Telling them to sit up straight asks for more of the thing that is already difficult.

What is postural insecurity?

It is not one of the named subtypes in the sensory integration classification. When the phrase describes a child who is afraid of movement or of losing balance, the term in that literature is gravitational insecurity, which is classed as a sensory modulation problem rather than a balance problem.

Is postural disorder a diagnosis?

Not in the DSM-5 or ICD-11. It is a subtype in a classification proposed within occupational therapy. When coordination difficulty meets formal criteria, the diagnosis is developmental coordination disorder.

Sources

Blank R, Barnett AL, Cairney J, et al. International clinical practice recommendations on the definition, diagnosis, assessment, intervention, and psychosocial aspects of developmental coordination disorder. Developmental Medicine & Child Neurology. 2019;61(3):242–285. doi:10.1111/dmcn.14132 (PMID 30671947)
Gao J, Yang Y, Xu X, Huang D, Wu Y, et al. Motor-based interventions in children with developmental coordination disorder: a systematic review and meta-analysis of randomised controlled trials. Sports Medicine – Open. 2025;11(1):59. doi:10.1186/s40798-025-00833-w (PMID 40419841).
Miller LJ, Nielsen DM, Schoen SA, Brett-Green BA. Perspectives on sensory processing disorder: a call for translational research. Frontiers in Integrative Neuroscience. 2009;3:22. doi:10.3389/neuro.07.022.2009 (PMID 19826493).
Miller LJ, Anzalone ME, Lane SJ, Cermak SA, Osten ET. Concept evolution in sensory integration: a proposed nosology for diagnosis. American Journal of Occupational Therapy. 2007;61(2):135–140. doi:10.5014/ajot.61.2.135 (PMID 17436834)
Potegal M, May-Benson TA, Oxborough S, Hall A, McKnight S. Reduced gain and shortened time constant of vestibular velocity storage as a source of balance and movement sensitivities in gravitational insecurity. Occupational Therapy International. 2022;2022:5240907. doi:10.1155/2022/5240907 (PMID 35600904).
Zimmer M, Desch L; Section on Complementary and Integrative Medicine; Council on Children with Disabilities; American Academy of Pediatrics. Sensory integration therapies for children with developmental and behavioral disorders. Pediatrics. 2012;129(6):1186–1189. doi:10.1542/peds.2012-0876 (PMID 22641765)

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. Sensory and motor concerns are best assessed by an occupational or physical therapist who can evaluate your individual child.

Postural Difficulties in Children: Signs and Support