Trauma and PTSD in children: how it presents

Post-traumatic stress disorder in children is consistently underrecognised. This is partly because the clinical presentation in children differs substantially from the adult diagnostic criteria on which much of the public awareness of PTSD is based. Children who have experienced trauma may not report flashbacks in the way adults describe them. They may not be able to articulate that they feel distressed or explain why certain situations provoke extreme reactions. The trauma may instead emerge through behaviour, physical symptoms, play, and relational difficulties that appear disconnected from the original event. A child who becomes aggressive, refuses school, develops unexplained abdominal pain, or regresses to younger behaviours may be exhibiting the sequelae of unprocessed trauma.

What counts as trauma

Trauma is not simply defined by the severity of an event but by the impact that event has on the child's nervous system and their ability to function. Events that commonly produce traumatic stress responses in children include witnessing or experiencing physical or sexual abuse, domestic violence, serious accidents, medical procedures, bereavements (particularly sudden or violent deaths), community violence, and natural disasters. Developmental trauma, the cumulative effect of prolonged neglect, emotional abuse, or inconsistent caregiving in early life, is particularly complex and often produces a broader pattern of dysregulation than single-incident PTSD. Two children who experience the same event may have very different outcomes depending on their temperament, the quality of their attachment relationships, and the support available after the event.

How trauma presents in younger children

In children under the age of around ten, PTSD typically presents through play themes that re-enact the traumatic event, through nightmares and sleep disturbance, through regression to earlier developmental stages (bedwetting, thumb-sucking, clinging), through physical complaints, and through heightened startle responses. Very young children who have experienced early relational trauma may present with disorganised attachment, difficulties with emotional regulation, and developmental delays. Because these presentations are not obviously linked to a traumatic event, particularly where the trauma occurred in infancy or has not been disclosed, they are frequently attributed to other causes.

How trauma presents in adolescents

In teenagers, trauma more commonly presents through avoidance, emotional numbing, irritability, hypervigilance, risk-taking behaviour, substance use, self-harm, and difficulties in peer relationships. Adolescents who have experienced sexual abuse or assault frequently present with shame rather than distress, and may minimise or deny the event's significance. Concentration difficulties and academic decline are common, and are often addressed through educational interventions without exploring whether trauma is a contributing factor. Dissociation (a sense of being detached from one's body or surroundings) is more prevalent in adolescent trauma responses than in younger children and can be frightening and confusing for the young person.

Trauma-informed assessment

A trauma-informed assessment does not simply ask whether a traumatic event occurred. It explores the child's current functioning across multiple domains (emotional, behavioural, relational, physical, and academic) and considers whether trauma may be a contributing factor even where it has not been disclosed. It includes a detailed developmental history and, where appropriate, structured measures such as the Child PTSD Symptom Scale or the UCLA PTSD Reaction Index. It attends to what the child communicates through play, drawing, and behaviour as well as through verbal report. It treats disclosure as a process rather than an event, and it prioritises the child's sense of safety throughout.

What effective treatment involves

Trauma-focused cognitive behavioural therapy (TF-CBT) is the most extensively evidenced treatment for PTSD in children and young people, with support from randomised controlled trials across a range of trauma types. It typically involves both the child and a non-offending parent or carer, and includes psychoeducation about trauma, relaxation and affect regulation skills, a graduated trauma narrative, and cognitive processing of distorted beliefs arising from the trauma. Eye movement desensitisation and reprocessing (EMDR) also has a strong evidence base for childhood PTSD and is endorsed by NICE. Where complex developmental trauma is present, treatment typically involves a longer stabilisation phase before trauma processing begins, and requires a clinician with specialist training in complex trauma.