- Epidemiology and risk factors
- Clinical presentation and diagnosis
- Neuroimaging and assessment tools
- Management strategies and rehabilitation
- Long-term outcomes and follow-up
Mild traumatic brain injury (mTBI) is a significant public health concern in paediatrics, representing the most common type of brain injury in children. Incidence rates vary globally but are reported to affect around 180 to 300 per 100,000 children annually, with higher rates among adolescents compared to younger age groups. A substantial proportion of paediatric mTBI cases occur during sports and recreational activities, with contact sports such as rugby and football contributing significantly to injury rates. Additionally, falls, bicycle accidents, and motor vehicle collisions also account for a large percentage of cases, particularly in younger children.
Numerous risk factors for mTBI and post-concussion syndrome (PCS) in children have been identified. Age and sex play important roles; adolescents, particularly males, are more frequently affected, although some studies find increasing vulnerability in female athletes to persistent symptoms. The developing brain may be more susceptible to biomechanical forces due to anatomical and physiological differences, such as thinner cranial bones and ongoing myelination, which may predispose younger children to different injury patterns compared to adults.
Additional risk factors include previous history of concussion, which is associated with both increased risk of subsequent concussions and prolonged recovery periods. Children with underlying neurological or psychiatric conditions—such as attention-deficit hyperactivity disorder (ADHD), anxiety, or migraine—may also experience more severe or protracted PCS symptoms. Socioeconomic status can indirectly affect outcomes, with children from lower-income families potentially facing delayed diagnosis or limited access to appropriate care and rehabilitation services.
Certain environmental and situational factors also contribute to injury risk. Poorly supervised play, lack of protective equipment, and inadequate coaching on safe play techniques further heighten the risk of mTBI in children. Additionally, while helmet use dramatically reduces the risk of severe head injury, it may not fully prevent mTBI, underscoring the importance of multifaceted prevention strategies.
Understanding the epidemiology and associated risk factors of paediatric mTBI is critical for the development of effective prevention and management practices. It enables clinicians, educators, and policy-makers to identify at-risk populations and tailor interventions accordingly, aiming to reduce the burden of injury and associated complications like PCS.
Clinical presentation and diagnosis
Children presenting with mild traumatic brain injury (mTBI) may exhibit a spectrum of clinical signs and symptoms that vary depending on age, developmental stage, and injury severity. Immediately following the incident, common symptoms include headache, dizziness, confusion, nausea, and temporary disturbance of consciousness. Loss of consciousness is not a prerequisite for diagnosis and occurs in a minority of cases. In young children, signs may be more subtle or difficult to articulate; irritability, excessive crying, impaired balance, change in sleep patterns, or refusal to eat may be observed. These non-specific symptoms necessitate a high index of suspicion, especially in pre-verbal or minimally verbal children.
Post-concussion syndrome (PCS) refers to a complex of symptoms that may persist beyond the expected recovery period following mTBI. These symptoms may be physical (e.g. headache, fatigue, visual disturbances), cognitive (e.g. difficulty concentrating, memory issues, reduced academic performance), emotional (e.g. mood swings, anxiety, depression), or sleep-related (e.g. insomnia, excessive drowsiness). Diagnosis of PCS typically applies when symptoms continue for more than four weeks in the paediatric population. It is essential for clinicians to recognise that symptom burden rather than duration alone should guide assessment and management.
Diagnosis of mTBI in paediatrics is predominantly clinical, based on detailed history and structured symptom assessment. History-taking should include information on the mechanism of injury, immediate post-injury symptoms, and any factors that could suggest complications. Standardised tools, such as the Child SCAT6 or Post-Concussion Symptom Inventory (PCSI), support the identification and monitoring of concussion symptoms over time. Physical examination should include neurological assessment, balance testing, and cognitive screening where appropriate. Although the majority of children with mTBI recover without complications, vigilance is required to distinguish cases that may evolve into more significant pathology or PCS.
Clear diagnostic criteria, such as those outlined in international consensus statements, aid clinicians in accurately identifying mTBI and PCS in children. Key features include a traumatic mechanism, at least one acute sign or symptom, and exclusion of more serious intracranial pathology. In cases where symptoms worsen, fail to resolve, or are accompanied by red flags—such as vomiting, unequal pupils, seizures, or deteriorating consciousness—urgent imaging and referral may be necessary to rule out more serious outcomes like intracranial haemorrhage or cerebral oedema.
Diagnosis is further complicated by the overlap between mTBI symptoms and common paediatric concerns, such as anxiety and learning difficulties. A comprehensive approach that involves educators, psychologists, and family members may be required to fully capture the functional impact of injury and support appropriate diagnosis. This is particularly important in cases of PCS, where prolonged symptoms can have far-reaching effects on educational attainment and psychosocial wellbeing.
Neuroimaging and assessment tools
In paediatrics, neuroimaging plays a selective but important role in the evaluation of mild traumatic brain injury (mTBI). The vast majority of children with mTBI present without complications that require imaging; therefore, brain scans are generally reserved for cases where there is suspicion of more severe intracranial pathology. Clinicians rely on validated clinical decision rules, such as the Paediatric Emergency Care Applied Research Network (PECARN) guidelines, to determine the necessity of neuroimaging in acute settings. These tools aid in identifying children at low risk for clinically significant brain injuries who do not require computed tomography (CT), thereby avoiding unnecessary radiation exposure.
When imaging is indicated—typically owing to concerns such as prolonged loss of consciousness, repeated vomiting, signs of a skull fracture, or focal neurological deficits—non-contrast head CT is the modality of choice due to its rapid availability and sensitivity for detecting acute haemorrhage or fracture. However, because of the potential risks associated with ionising radiation, its use is judicious. Magnetic resonance imaging (MRI), which avoids radiation, is sometimes utilised in cases of persistent symptoms or suspected subtle structural injury not detected on CT. Advanced MRI techniques, like susceptibility-weighted imaging or diffusion tensor imaging (DTI), are increasingly studied for their ability to detect microstructural brain changes, but these are not yet standard in routine clinical practice.
Beyond imaging, structured assessment tools are vital in the clinical evaluation and longitudinal monitoring of children with mTBI and post-concussion syndrome (PCS). Standardised symptom checklists, such as the Post-Concussion Symptom Inventory (PCSI), allow for age-specific self-reporting as well as parental input, capturing the multifaceted nature of concussion symptoms. These tools track a range of physical, cognitive, emotional, and sleep-related symptoms and are particularly beneficial in follow-up care to monitor resolution or persistence over time.
For sideline and acute clinical evaluations, tools such as the Child Sport Concussion Assessment Tool 6 (Child SCAT6) are widely employed. It combines symptom checklists, cognitive screening, and balance testing, providing a rapid, structured format for identifying concussion symptoms in children aged 5 to 12. For older children and adolescents, the SCAT6 tool is more appropriate. While helpful, these tools should be interpreted in conjunction with clinical judgment, as performance can be influenced by factors such as fatigue, anxiety, or a child’s communication ability.
Neuropsychological assessment is another key component in evaluating PCS, especially when symptoms interfere with academic performance or daily functioning. These assessments provide in-depth analysis of neurocognitive domains, such as memory, processing speed, and executive function. Although not routinely required for all mTBI cases, referral to paediatric neuropsychology may be indicated when cognitive difficulties persist beyond the subacute period or when pre-existing conditions complicate the clinical picture.
The integration of neuroimaging findings with symptom profiles and standardised assessment tools provides a comprehensive framework for evaluating mTBI in the paediatric population. However, the emphasis remains on clinical evaluation and symptom monitoring, with imaging used only when clearly indicated. As the understanding of mTBI and PCS in children evolves, ongoing research into more sensitive and specific diagnostic tools will be essential for improving early identification and personalised management strategies.
Management strategies and rehabilitation
Management of mild traumatic brain injury (mTBI) and post-concussion syndrome (PCS) in children hinges on a multi-disciplinary, individualised approach prioritising symptom resolution, cognitive recovery, and reintegration into daily activities. The cornerstone of initial management is physical and cognitive rest, which should be closely monitored to avoid both under- and over-resting. Complete inactivity is discouraged beyond the immediate post-injury phase, as emerging evidence suggests prolonged rest may delay recovery. Instead, a period of 24 to 48 hours of relative rest is generally recommended, followed by a gradual, symptom-guided return to activity.
Return-to-learn protocols are essential in the paediatric context, considering the central role of education in a child’s development. These staged reintegration programs often begin with modified academic demands—such as reduced workload, shortened days, or additional breaks—and are adjusted based on symptom tolerance. Collaboration between healthcare providers, educators, and families is critical for ensuring appropriate accommodations and avoiding unnecessary academic pressure which can exacerbate symptoms. Return-to-play decisions also follow a graded protocol and are typically coordinated with school and sports personnel to ensure safety and compliance.
For children experiencing PCS, extending beyond the usual recovery time of four weeks, targeted interventions become necessary. These include symptom-specific therapies, such as physiotherapy for vestibular or balance disturbances, cognitive behavioural therapy for emotional difficulties, and occupational therapy focusing on daily functioning challenges. Speech and language therapists may be involved when communication or processing speed is affected. Coordination of care among these allied health professionals forms the basis of effective rehabilitation in PCS cases.
Pharmacological interventions are generally a secondary consideration in paediatric mTBI management due to limited evidence on efficacy and safety. However, medications may be cautiously introduced for symptom clusters—such as melatonin for sleep disturbances or low-dose amitriptyline for chronic headache—under specialist supervision. Anxiety, depression, or behavioural challenges resulting from PCS may be addressed through psychological counselling, with pharmacotherapy considered only when non-pharmacological strategies prove inadequate.
Education and reassurance are integral to both acute and long-term care. Parents and caregivers require clear guidance on monitoring symptoms, recognising warning signs, and supporting recovery. Addressing misconceptions and alleviating fears about long-term brain damage helps reduce anxiety, which itself can prolong symptoms. Involving the child in understanding their own recovery process, where developmentally appropriate, can foster a sense of agency and cooperation with rehabilitation goals.
Community-based support, such as school counselling services and local rehabilitation programmes, is often invaluable, especially for families with limited access to specialised care. In such settings, general practitioners and paediatricians play a vital role in coordinating referrals, monitoring recovery, and advocating for accommodations within the school system. Regular follow-up appointments ensure that recovery proceeds as expected and offer opportunities to intervene if secondary challenges, such as academic regression or social withdrawal, emerge.
The dynamic and still-developing nature of the paediatric brain necessitates an adaptable approach to recovery. As such, ongoing evaluation and modification of management strategies are important, especially in the context of prolonged symptoms or complex cases. Future directions in paediatric mTBI rehabilitation increasingly incorporate personalised care plans, informed by more refined assessment tools and an evolving understanding of recovery trajectories in diverse populations of children.
Long-term outcomes and follow-up
Long-term outcomes following mild traumatic brain injury (mTBI) in children can vary significantly, with most recovering within a few weeks, but a notable subset developing persistent symptoms indicative of post-concussion syndrome (PCS). These long-term sequelae can affect physical health, cognition, psychological wellbeing, and social integration. While many children experience complete symptom resolution, up to 30% may report ongoing complaints several months post-injury, particularly if early symptoms were severe or if there is a history of previous concussions.
Academic performance is one area frequently impacted in children with prolonged PCS. Cognitive symptoms such as reduced attention span, memory impairments, and slower processing speed can interfere with classroom learning and exam performance. These issues may persist even when overt physical symptoms have resolved, underscoring the importance of extended monitoring and tailored academic support. Teachers and educational psychologists are instrumental in identifying learning difficulties post-injury and recommending appropriate adjustments such as extra time on assessments, reduced homework load, or learning support plans.
Psychological effects can also emerge or persist in the long-term post-mTBI. Children may experience mood disturbances including anxiety, depression, or irritability, stemming either directly from neurobiological changes associated with the brain injury or as a reaction to limitations imposed by ongoing symptoms. Sleep disturbances are another common long-term issue, further compounding emotional and cognitive difficulties. Psychosocial support and, where necessary, referral to child and adolescent mental health services (CAMHS) become vital components of ongoing care in such cases.
Repeated mTBIs over time raise concerns about cumulative effects on brain development, especially during critical periods of neurodevelopment in childhood and adolescence. Although the long-term structural and functional brain changes resulting from repeat concussions in children are not yet fully understood, there is emerging evidence that recurrent injuries may be associated with persistent neurocognitive deficits, behavioural regulation issues, and increased vulnerability to conditions such as depression and anxiety in later life. This reinforces the need for conservative management and prolonged rest periods between return-to-play decisions, particularly in children with prior head injuries.
Long-term follow-up after paediatric mTBI is essential to identify complications that may arise weeks or months post-injury. Best practice includes scheduled follow-ups in primary care or specialist clinics to assess symptom resolution, school reintegration, emotional wellbeing, and family concerns. Use of symptom inventories and neurocognitive screening tools can guide whether further evaluation is warranted. For children with protracted recovery or complicated histories, more intensive interventions coordinated through multidisciplinary teams including neurologists, neuropsychologists, occupational therapists, and social workers may be needed.
Family involvement is crucial in long-term care. Parents and caregivers serve not only as observers of symptoms but also as advocates for appropriate school accommodations and emotional support for their children. Education about expected recovery trajectories, signs of delayed recovery, and when to seek further medical attention helps empower families and prevent overmedicalisation that may jeopardise return to normal functioning. Siblings and peers may also require guidance and understanding of the child’s condition, particularly when changes in personality or behaviour affect social dynamics.
While the majority of children with mTBI do not experience lasting impairment, vigilance through structured follow-up remains key in promoting optimal outcomes. The heterogeneity of long-term recovery in paediatrics necessitates a personalised approach, acknowledging the interplay of biological, psychological, and environmental factors. As data continue to emerge, ongoing audit and refinement of follow-up protocols will help ensure that children affected by mTBI and PCS receive the timely interventions and support necessary to thrive in their academic, social, and emotional development.
