Lead
Maybe they're just being lazy. When a child repeatedly cannot get to school, this thought surfaces in parents' minds — and sometimes gets said out loud by teachers or grandparents.
The power of that framing is significant. Directed at a child, it adds pressure. Directed at a parent, it adds isolation. You want to push back with "it isn't laziness," but the anxiety of not having solid evidence leaves a gap.
This article attempts to dismantle the "laziness" narrative not through emotional argument but through medical and statistical evidence. It also addresses the fact that the word "school refusal" covers a wide and varied reality, and that within that variety a meaningful proportion of cases involve a condition called Orthostatic Dysregulation (OD) — an autonomic nervous system disorder.
Having the words to say, clearly, that it is not laziness — that is what this article is for.
School Refusal: What the Numbers Say, and the Limits of the Definition
Japan's Ministry of Education, Culture, Sports, Science and Technology (MEXT) defines school refusal (futoukou) as an absence of 30 or more days per year, excluding illness and economic reasons. The 2023 fiscal year survey reported 346,482 children and students absent under this definition — an 11th consecutive annual increase and a new record [1].
The scale of that number means school refusal is not a rare exception affecting a small minority. It works out to approximately 3.2% of all primary and middle school students — roughly one child per class [1].
But the definition has a less visible problem: a child absent for 29 days is not counted. The threshold of 30 days is an administrative boundary, and a child with 29 absences is not in a fundamentally different state from one with 30. The boundary of the definition frequently diverges from the reality of who needs support.
More importantly, even within MEXT's own taxonomy, "wants to go but cannot" and "has no desire to go" are classified as distinct conditions. This distinction is foundational for designing any support, but from the outside both can look the same.
Orthostatic Dysregulation: What It Is
One condition that can produce "wants to go but cannot" is Orthostatic Dysregulation (OD), which has received increasing clinical attention as a background factor in school refusal.
OD is a disorder of autonomic nervous system: the part of the nervous system that controls involuntary functions like heart rate, blood pressure, and digestion function in which the blood pressure and heart rate fail to regulate properly when a person stands up. In a healthy person, the blood vessels in the lower limbs constrict reflexively against gravity when standing, maintaining blood flow to the brain. In OD, this regulatory function is impaired, so standing produces a drop in cerebral blood flow — generating headache, dizziness, nausea, and fatigue [2].
The defining feature is that symptoms worsen in the morning and improve in the afternoon. This pattern is the mechanism that generates the "laziness" misunderstanding. The child genuinely cannot function in the morning. But because they can be active in the afternoon, observers read it as "feeling sick only in the morning on purpose."
According to the revised third edition of the clinical guidelines from the Japanese Society of Psychosomatic Pediatrics (JSPP), OD affects an estimated 5–10% of school-age children and approximately 10% of middle school students [2]. Reports indicate that OD is present as a co-occurring condition in 30–40% of children with school refusal [3] — a background condition too common to ignore.
With appropriate treatment, data suggest that more than 80% of cases improve within one year [2]. This is not a condition that, once present, stays indefinitely. Diagnosis and appropriate management are associated with recovery.
Diagnosis and Treatment
OD is diagnosed primarily through clinical interview about physical symptoms and the "new orthostatic test" (shin-kiritsu shiken), which measures blood pressure and heart rate before and after standing. Evaluation at a pediatric clinic — ideally one experienced in pediatric psychosomatic medicine — is required. Self-diagnosis at home is not possible.
The core of treatment is, alongside any necessary medication, active fluid and salt intake (approximately 1.5–2 liters of water and a total daily salt intake of around 10 g of sodium chloride — roughly 3 g above a typical meal pattern) and sleep-timing management [2]. Clinical guidelines by Tanaka and colleagues in Japan position lifestyle management as at least as important as pharmacotherapy [4]. Vasopressors such as midodrine may be used, but establishing good daily habits comes first.
Because of the pattern of morning symptoms with afternoon improvement, OD is often discussed alongside the broader category of autonomic dysfunction, including POTS (Postural Orthostatic Tachycardia Syndrome): a condition causing abnormally fast heart rate on standing, often with fatigue, dizziness, and brain fog, especially in adolescents [5].
Beyond the "Mental vs. Physical" Binary
School refusal frequently involves not only physical conditions like OD but also anxiety disorders, depression, the secondary effects of being bullied, or developmental differences — often in combination.
The clinical distinction between school refusal driven by psychological stress (such as adjustment disorder) and school refusal driven by an autonomic disorder like OD can be difficult even for specialists [2]. In practice, both can coexist: a child with significant anxiety may also have impaired autonomic regulation, or OD may trigger secondary anxiety and depression over time.
Trying to decide "is this mental or physical?" at home is unlikely to produce an answer. It is a clinically complex question. There is no need to be ashamed of carrying that complexity, and no need to feel urgency about resolving it one way or the other.
What is sufficient: the child cannot function, there may be more than one reason for this, and professional evaluation may be helpful.
Records as Early-Stage Awareness
One characteristic of OD is that symptoms often do not begin abruptly but are preceded by changes in how mornings look — changes that, in retrospect, parents frequently recognize as having started some time before. "Looking back, they were already different then" is a common realization.
How a child looks in the morning, how they wake up, how often they complain of headaches or stomachaches, how smoothly they leave for school — recording these things is extremely useful information when seeking medical care later. A caregiver's observation record functions as diagnostic support material, helping a clinician understand the progression of symptoms.
If daily patterns have been logged in a parenting record app like Memori, the timeline of when things began to change can be shown sequentially during a clinic visit. Being able to say when the change started — rather than trying to reconstruct it from memory — may help get to appropriate medical care more quickly. Records started after something feels wrong are better than no records; a prior habit of logging daily state makes before-after comparison possible.
A Few Practical Steps
When a child is in a state of not being able to go, here are some things that are available to do today — not a checklist, but options.
Record the morning state. How the child looks when waking, symptoms they report, what actually happened (were they able to get up? did they eat?). A short note with a date and time makes "when" and "under what conditions" visible.
Observe the morning-afternoon difference. OD is characterized by symptom improvement in the afternoon. If "only feeling bad in the morning" recurs consistently, this becomes material for considering a pediatric appointment (or a clinic specializing in pediatric psychosomatic medicine). Before concluding "laziness," holding this observation for a defined period is a reasonable option.
Bring records to the appointment. A note organizing when symptoms began, their frequency, and the morning-afternoon pattern improves the quality of the clinical encounter. "Four months of this consistent pattern" gives the clinician far more to work with than "generally not feeling well."
Keep a non-laziness explanation available. Knowing the prevalence of OD, its overlap with school refusal, and its treatability provides language for explaining the situation to others. Words that protect a child are more durable when they come from facts rather than from feeling.
If in doubt, seek a consultation. A consultation with a pediatrician experienced in OD, or a specialist in pediatric psychosomatic medicine, is worthwhile even when symptoms seem mild. Waiting until things are more serious is medically less efficient than asking while the concern is forming.
Summary
"Laziness" has no medical content. The inability to get up in the morning can have a physiological basis — specifically, the impaired regulation of blood pressure and heart rate on standing that defines OD. That is not something willpower addresses.
The figure of 346,482 children with school refusal in Japan [1] does not describe a problem affecting only exceptional families; it describes a reality that can involve any parent. And within that reality, a proportion of cases involve a condition that responds to appropriate diagnosis and management.
Understanding what is actually happening for a child who "wants to go but cannot" is the first step toward having something to say instead of "laziness."
References
- Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan. Survey Results on Problem Behavior, Truancy, and Other Student Guidance Issues in Schools, Fiscal Year 2023. 2024. https://www.mext.go.jp/b_menu/houdou/2024/
- Japanese Society of Psychosomatic Pediatrics. Clinical Guidelines for the Diagnosis and Treatment of Orthostatic Dysregulation in Children. 3rd rev. ed. Tokyo: Nankodo; 2023.
- Tanaka H. Understanding and Managing Children with Orthostatic Dysregulation. Tokyo: Chuohoki; 2017.
- Tanaka H, Fujita Y, Takenaka Y, et al. Japanese clinical guidelines for juvenile orthostatic dysregulation version 1. Pediatr Int. 2009;51(1):169–179. doi:10.1111/j.1442-200X.2008.02638.x. PMID: 19371289
- Kizilbash SJ, Ahrens SP, Bruce BK, et al. Adolescent fatigue, POTS, and recovery: a guide for clinicians. Curr Probl Pediatr Adolesc Health Care. 2014;44(5):108–133. doi:10.1016/j.cppeds.2013.12.014. PMID: 24709469
- Sheldon RS, Grubb BP 2nd, Olshansky B, et al. 2015 Heart Rhythm Society Expert Consensus Statement on the Diagnosis and Treatment of Postural Tachycardia Syndrome, Inappropriate Sinus Tachycardia, and Vasovagal Syncope. Heart Rhythm. 2015;12(6):e41–63. doi:10.1016/j.hrthm.2015.03.029. PMID: 25980576
- Claydon VE, Hainsworth R. Increased salt intake for orthostatic intolerance syndromes: a systematic review and meta-analysis. Am J Med. 2021;134(1):97–104. doi:10.1016/j.amjmed.2020.06.038. PMID: 32603788