Predicting pediatric posttraumatic stress disorder after road traffic accidents: the role of parental psychopathology

Posttraumatic stress disorder symptoms in mothers and adolescents after the Wenchuan earthquake: A cross-sectional and longitudinal network analysis

OBJECTIVE

This study used network analysis to investigate the cross-sectional and longitudinal network between PTSD symptoms within mother-adolescent dyads at 12 and 18 months after the 2008 Wenchuan earthquake.

METHODS

The sample was from the Wenchuan Earthquake Adolescent Health Cohort. 399 mother-adolescent dyads completed the Posttraumatic Stress Disorder Self-Rating Scale at 12 and 18 months after the earthquake. We assessed central symptoms (those with the most significant influence on other symptoms) and bridge symptoms (symptoms connecting different communities) in contemporary networks (i.e., cross-sectional networks). Subsequently, cross-lagged panel network analyses (CLPN) were performed to estimate longitudinal relationships among symptoms between dyads.

RESULTS

In the contemporary networks, symptoms such as "intrusive thoughts" of both dyads and "flashbacks" of adolescents were central, indicating that they are crucial in maintaining the network of PTSD symptoms. Additional symptoms such as maternal "difficulty in concentration" and dyads' "pessimism and disappointment" should also be considered because of their central roles. Moreover, the temporary network did not directly replicate the contemporary networks, with adolescents' "nightmares" at 12 months having a high influence on other PTSD symptoms at 18 months.

LIMITATIONS

Self-reported tools other than clinical diagnoses were used to collect data.

CONCLUSIONS

These symptom-level associations at cross-sectional and longitudinal networks extend our understanding of PTSD symptoms among mother-adolescent dyads by pointing to specific key symptoms of PTSD that may drive the co-occurrence of PTSD among dyads. Recognizing these symptoms is imperative for the development of targeted interventions and treatments aimed at addressing comorbid PTSD in mother-adolescent dyads.

It's all in the hair: Association between changes in hair cortisol concentrations in reaction to the COVID-19 pandemic and post-traumatic stress symptoms in children over time

After exposure to a stressful/traumatic event, some individuals will develop post-traumatic stress symptoms (PTSS). In adults, low cortisol levels appear to be a risk factor for the development of PTSS. Indeed, both lower pre-trauma cortisol levels and low cortisol levels in the aftermath of a traumatic event have been associated with greater PTSS. In contrast, studies conducted in children showed that elevated cortisol levels shortly after trauma exposure are associated with more severe post-traumatic stress symptomatology. The few studies that have examined how pre-trauma cortisol levels predict PTSS in children have found no effect. Given that a pandemic can induce PTSS in certain individuals, we investigated whether cortisol secretion prior to and in the early stages of the COVID-19 pandemic in Quebec (Canada) predicted PTSS in children. In June 2020, we collected a hair sample from 71 children (8-15 y/o, M = 11.65; 54.93% girls) without a history of psychopathology or exposure to previous traumatic events. Hair samples allowed us to derive cumulative measures of cortisol levels for the months prior to (from mid-December 2019 to mid-March 2020) and at the beginning of the pandemic (from mid-March 2020 to mid-June 2020). PTSS were assessed every 3 months between June 2020 (T1) and March 2021 (T4). The results showed that a greater increase in hair cortisol at the beginning of the pandemic predicted less PTSS at T1, with an increase in these symptoms over time. This study highlights the utility of using hair cortisol during future chronic stressful events to better understand its association with the evolution of distress.

Factors of well-being of youth with complex medical conditions from the experience of hospitalization and convalescence: A pilot study

Well-being in children with a complex medical condition (CMC) impacts the way they view and communicate with their immediate environment as well as their development, and it is thus necessary to inquire about the contextual issues and different needs that a CMC carries. This pilot study aimed to identify factors of pediatric well-being from the experience of hospitalization and convalescence of youth with CMC and their caregivers, in a cross-sectional analysis using a selective methodology complemented by an indirect observational methodology. We analyzed the quality of life and well-being of youth with CMC using a validated KINDLR questionnaire. We collected 35 surveys: 11 from youth with CMC and 24 from caregivers from Spain. We focused the analysis on sociodemographics, well-being perceptions, and coping strategies variables. The results show that children aged between 3 and 6 years and their caregivers scored physical well-being the lowest out of all dimensions of well-being, and they scored family well-being the highest. Moreover, youth between the ages of 7 and 17 years and their caregivers scored school-related well-being the lowest. Coping strategies to deal with stressful situations differ between children and caregivers. While children mainly engage in social withdrawal, caregivers engage in cognitive restructuring and expressing emotions. However, we did not find a relationship between coping strategies and well-being perceptions. These results highlight the need to facilitate communication spaces with both families and health professionals where the voice of children is considered.

Post-traumatic stress disorder of children with traffic accidents and their parents in Japan

BACKGROUND

Children who survive traffic accidents, and their parents, may develop post-traumatic stress disorder (PTSD) or related symptoms (depression or anxiety), which can hinder the children's development and the parents' ability to provide effective care. In Japan, the PTSD incidence rate following traffic accidents and its related factors remain unclarified.

METHOD

Participants were 79 children and 104 parents. The children were aged 3-18 years when injured. From August-December 2015, participants completed a self-reported questionnaire survey that comprised the 15-item Post-traumatic Stress Symptoms for Children and the Japanese version of the Impact of Event Scale-Revised. The children's Injury Severity Score (ISS) was also obtained from their medical records. Correlations, analyses of variance, and multiple regression analyses were conducted.

RESULTS

Among the children and the parents, 10.2% and 22.1% were deemed to be at high risk of PTSD, respectively. Their stress scores were significantly positively correlated with each other and negatively correlated with children's age at the time of the accident. Parents who witnessed their children's accidents and those whose children were hospitalized were more stressed. Neither the children's nor the parents' risk for PTSD was associated with the ISS and the amount of time since the accident.

CONCLUSIONS

A system that simultaneously works with children and parents, to support both parties' psychological recovery is required. To ensure psychological care post-injury, it is necessary to evaluate PTSD risk, regardless of injury severity. Implementing preventive and early interventions can prove more valuable than awaiting natural recovery.

Efficacy of Psychological Intervention for Children with Concurrent Posttraumatic Stress Disorder and Mild Traumatic Brain Injury

Posttraumatic stress disorder (PTSD) and mild traumatic brain injury (mTBI) are common conditions following motor vehicle accidents (MVAs). Mild TBI and PTSD not only share similar features but may also coexist and interact. Nonetheless, research on psychotherapeutic interventions for PTSD in patients with a history of mTBI, particularly regarding pediatric populations, is limited. The present study compared the efficacy of the prolonged exposure treatment protocol for children and adolescents (PE-A) with PTSD and mTBI (n = 16) versus PTSD alone (n = 21); treatment commenced at least 3 months following an MVA. Emotional status and cognitive functioning were assessed pre- and postintervention using questionnaires and standardized neuropsychological tests. Participants from both groups benefitted from the intervention, as reflected in their emotional status via increased ratings of well-being and decreased ratings of PTSD, anxiety, depression, and postconcussive symptoms, η² = .21-.50. Ratings of cognitive function also improved for cognitive flexibility, η² = .30; executive function in everyday life, η² = .27; and attention and inhibition, η² = .16. Parental PTSD was the strongest predictor of improvement after intervention, sr² = .35. Thus, it appears that PE-A is an effective intervention for children with MVA-related PTSD regardless of its comorbidity with mTBI.

Short and Long-Term Parental Posttraumatic Stress After a Child's Accident: Prevalence and Associated Factors

Studies on the long-term prevalence of parental posttraumatic stress symptoms (PTSS) following child accidental injury are scarce, and findings on risk factors vary. In this follow-up study (T2, n = 69) we determined the prevalence of parental PTSS 2-4 years after accidental injury of their child, compared with 3 months after the accident (T1, n = 135). Additionally, we examined the association between parental and child factors and PTSS severity. Children were 8-18 years old at the time of the accident. Parent and child PTSS was assessed by self-report. Other data were retrieved from medical records and a telephone interview. Parental PTSS was 9.6% at T1 and 5.8% at T2. Acute parental stress as measured within 2 weeks of the child's accident was significantly associated with parental PTSS severity (T1 and T2), as was the child's hospitalization of more than 1 day at T1 and the child's permanent physical impairment at T2. To prevent adverse long-term psychological consequences we recommend identifying and monitoring parents at risk and offering them timely treatment.

Trajectories of maternal symptoms of posttraumatic stress disorder predict long-term mental health of children following the Wenchuan earthquake in China: A 10-year follow-up study

BACKGROUND

Maternal psychopathology can be an important factor associated with psychological adjustment of children. However, there is limited research on long-term impacts of maternal posttraumatic stress disorder (PTSD) on children's mental health. This study examined how PTSD trajectories of women exposed to the 2008 Wenchuan earthquake in China predicted their children's mental health symptoms 10 years after the earthquake.

METHODS

410 dyads of mothers and their adolescent children who exposed to the Wenchuan earthquake were investigated at 12 and 18 months post-earthquake. While the mothers completed measures of earthquake exposure and PTSD symptoms, the children completed measures of earthquake exposure, PTSD, depression and anxiety symptoms. In the 10-year follow up, 257 out of the 410 children completed measures of PTSD, depression and anxiety symptoms. Data were analyzed using linear regression.

RESULTS

Four trajectories of maternal PTSD symptoms were identified: (a) chronic (9.5%); (b) resilient (66.3%); (c) delayed (7.6%); and (d) recovery (16.6%); More importantly, the findings demonstrated that children whose mothers experienced chronic PTSD reported higher level of PTSD and anxiety symptoms 10 years after the earthquake.

LIMITATIONS

Only two waves of maternal PTSD were collected, self-reported tools other than clinical reviews were used to collect data, and a significant proportion of participants did not respond at the 10-year follow-up.

CONCLUSIONS

This study identified maternal PTSD trajectories following the Wenchuan earthquake. Chronic PTSD symptoms in mothers were associated with increased risk of children's PTSD and anxiety 10 years after the earthquake.

Featured Article: Trajectories of Posttraumatic Stress Symptoms in Parents of Children With a Serious Childhood Illness or Injury

Objective

Serious childhood illness is associated with significant parent psychological distress. This study aimed to (a) document acute and posttraumatic stress symptoms (PTSS) in parents of children with various life-threatening illnesses; (b) identify trajectory patterns of parental PTSS and recovery over 18 months; (c) determine psychosocial, demographic, and illness factors associated with trajectory group membership.

Methods

In total, 159 parents (115 mothers, 44 fathers) from 122 families participated in a prospective, longitudinal study that assessed parent psychological responses across four time points-at diagnosis, and 3, 6, and 18 months later. Children were admitted to the Cardiology, Oncology, and Pediatric Intensive Care Departments in a tertiary pediatric hospital. The primary outcome was parent PTSS.

Results

Three distinct parent recovery profiles were identified-"Resilient," "Recovery," and "Chronic." The "Resilient" class (33%) showed low distress responses across the trajectory period, whereas the "Recovery" class (52%) showed significantly higher levels of distress at the time of diagnosis that gradually declined over the first months following their child's illness. Both of these classes nevertheless remained within the normative range throughout. In contrast, the "Chronic" class (13%) was consistently high in severity, remaining within the clinical range across the entire period. Psychosocial factors such as mood, anxiety, and emotional responses predicted group membership, whereas demographic and illness factors did not.

Conclusions

Parents show considerable resilience in the face of children's life-threatening illnesses. Early assessment of parent psychosocial factors may aid identification of those who would benefit from early intervention.

Posttraumatic Stress, Depressive Emotions, and Satisfaction With Life After a Road Traffic Accident

BACKGROUND

The psychological response of injured people after traffic accidents includes stress and depression.

PURPOSE

To assess orthopaedic patients' stress, depression, and satisfaction with life after traffic accidents in Greece.

METHODS

Descriptive, longitudinal, correlational study. Patients' background factors, injury severity, scores on the Impact of Events Scale-Revised (IES-R), the Center for Epidemiologic Studies Depression (CES-D) Scale, and the Satisfaction With Life Quality (SWLQ) Scale were recorded. The principles of the Declaration of Helsinki were applied.

RESULTS

In total, 60 patients participated in this study during hospitalization following a road traffic accident and 40 patients at 6 months after. Participants were mostly men (75%) with severe injuries (50%). The IES-R score at 6 months was significantly lower than during hospitalization. One out of 3 people had a CES-D score, which is considered of clinical significance. The SWLQ scores were considered high.

CONCLUSION

As posttraumatic stress and depression seem to affect a considerable percentage of people involved in road traffic accidents in Greece, these individuals should be assessed for posttraumatic stress and depression while still hospitalized.

Salivary cortisol and alpha-amylase diurnal profiles and stress reactivity in children with Attention Deficit Hyperactivity Disorder

There is growing evidence for dysregulation of the stress system in individuals with Attention Deficit Hyperactivity Disorder (ADHD). The stress system includes neuroanatomical and functional components that function in concert to maintain homeostasis and its main effectors are the hypothalamic-pituitary-adrenal (HPA) axis and the sympathetic/adrenomedullary nervous system (SNS). As stress system activity demonstrates a distinct circadian variation, we aimed to describe simultaneously, diurnal rhythms of both the HPA axis and the SNS in children with ADHD and a comparison group. Moreover, we attempted to investigate stress responses to a physical stressor, venipuncture, in both groups. Sixty-two prepubertal children with ADHD combined (ADHD-C) or inattentive (ADHD-I) type and 40 typically developing children provided saliva samples at six specific time points during a day, as well as before and 10 min after a scheduled morning venipuncture. Salivary cortisol and α- amylase were selected as reliable noninvasive biomarkers for HPA axis and SNS function and were measured in the samples obtained. Results revealed that children with ADHD-C had lower mean cortisol values both 30 min after awakening and at 18:00 h than controls (p = 0.002 and p = 0.018 respectively), as well as lower mean Cortisol Awakening Response (CAR) and Area Under the Curve for "wake to bed" period (AUC_i) values of cortisol (p = 0.004 and p = 0.001, respectively). Also, mean CAR and cortisol AUC_i were lower in children with ADHD-I than the control group (p = 0.034 and p = 0.038 respectively). Alpha-amylase measurements showed an increase over time (p < 0.001), which was similar in all three groups. Interestingly, α-amylase changes over time were correlated with the corresponding cortisol changes (p < 0.001). Venipuncture, elicited a significant increase only in α-amylase levels and more so in the control group (p = 0.003). These findings suggest a partial hypofunction of the stress system in children with ADHD.

Hair cortisol in relation to acute and post-traumatic stress symptoms in children and adolescents

BACKGROUND

We report on the preliminary results of two independent studies that (1) compare the hair cortisol concentrations (HCC) of healthy controls with patients displaying post-traumatic stress symptoms (PTSS, study 1+2), (2) investigate whether pre-trauma HCC are predictive for the development of acute stress symptoms (ASS) and PTSS (study 1) and (3) determine whether HCC correlate with PTSS in a clinical sample of children (study 2).

METHODS

In study 1, the clinical symptoms of 35 minors were examined one (T1) and seven weeks (T2) after surgery following an accident. Hair samples were taken after the accident that reflect cortisol secretion over the past three months before the accident (healthy controls). In study 2, HCC and PTSS symptoms were cross-sectionally assessed in 22 minors who had experienced a psychological trauma.

RESULTS

The HCC of patients with PTSS were lower than the HCC of healthy controls (study 1+2). Secondary analyses showed that HCC were significantly lower in male PTSS patients than in male healthy controls, whereas the HCC in females were comparably low in both groups. Pre-trauma HCC did not predict the total ASS and PTSS scores (study 1) and HCC were not directly related to the total PTSS scores (study 2).

Take A Breath: study protocol for a randomized controlled trial of an online group intervention to reduce traumatic stress in parents of children with a life threatening illness or injury

BACKGROUND

A substantial proportion of parents whose child is diagnosed with a life-threatening illness, experience high levels of distress that can lead to long-term difficulties in mental health, family functioning and child adjustment. This study evaluates the efficacy of an Acceptance Commitment Therapy-based group intervention designed to reduce distress symptoms in these parents. The program is delivered using videoconferencing to overcome factors that prevent participation in traditional face-to-face therapy.

METHOD/DESIGN

The study is a randomized control trial of the Take A Breath group intervention for parents demonstrating elevated symptoms of acute stress, delivered via videoconferencing in six 90 min group sessions. Participants are the primary caregivers of children aged 0 to 18 years admitted for a life threatening illness or injury to the Oncology, Cardiology, Neurology or Intensive Care Departments of a tertiary pediatric hospital. Parents will be randomized to intervention or waitlist control 4-10 months after their child's diagnosis. Measures will be collected prior to and immediately post intervention for intervention and waitlist parents to assess program efficacy. Intervention parents will be followed up at 6 months to assess the maintenance of program effects. We predict that intervention parents will show fewer symptoms post intervention than waitlist parents (primary outcomes: traumatic stress, depression, anxiety, stress symptoms), reflecting improvements in the psychological skills addressed in the intervention (mediating factors). It is anticipated that reductions in mental health difficulties for intervention parents will be maintained up to 6 months post-intervention and will be associated with broader improvements in parents' adjustment, child adjustment and child wellbeing (secondary outcomes).

DISCUSSION

This study is unique in evaluating a group intervention delivered to parents of children affected by of a diverse range life-threatening illness or injury. Online communication technology is employed to reduce participation barriers. If proven efficacious, this trans-diagnostic approach offers the potential for broad use as part of the suite of psychosocial services provided to families through tertiary pediatric settings.

TRIAL REGISTRATION

ACTRN12611000090910 . Trial Registration Date: 14/09/2011 Protocol Date/version: September 2015, version M Study Status: Ongoing.

Predicting posttraumatic stress disorder in children and parents following accidental child injury: evaluation of the Screening Tool for Early Predictors of Posttraumatic Stress Disorder (STEPP)

BACKGROUND

Children and their parents are at risk of posttraumatic stress disorder (PTSD) following injury due to pediatric accidental trauma. Screening could help predict those at greatest risk and provide an opportunity for monitoring so that early intervention may be provided. The purpose of this study was to evaluate the Screening Tool for Early Predictors of Posttraumatic Stress Disorder (STEPP) in a mixed-trauma sample in a non-English speaking country (the Netherlands).

METHODS

Children aged 8-18 and one of their parents were recruited in two academic level I trauma centers. The STEPP was assessed in 161 children (mean age 13.9 years) and 156 parents within one week of the accident. Three months later, clinical diagnoses and symptoms of PTSD were assessed in 147 children and 135 parents. We used the Anxiety Disorders Interview Schedule for DSM-IV - Child and Parent version, the Children's Revised Impact of Event Scale and the Impact of Event Scale-Revised. Receiver Operating Characteristic analyses were performed to estimate the Areas Under the Curve as a measure of performance and to determine the optimal cut-off score in our sample. Sensitivity, specificity, positive and negative predictive values were calculated. The aim was to maximize both sensitivity and negative predictive values.

RESULTS

PTSD was diagnosed in 12% of the children; 10% of their parents scored above the cut-off point for PTSD. At the originally recommended cut-off scores (4 for children, 3 for parents), the sensitivity in our sample was 41% for children and 54% for parents. Negative predictive values were 92% for both groups. Adjusting the cut-off scores to 2 improved sensitivity to 82% for children and 92% for parents, with negative predictive values of 92% and 96%, respectively.

CONCLUSIONS

With adjusted cut-off scores, the STEPP performed well: 82% of the children and 92% of the parents with a subsequent positive diagnosis were identified correctly. Special attention in the screening procedure is required because of a high rate of false positives. The STEPP appears to be a valid and useful instrument that can be used in the Netherlands as a first screening method in stepped psychotrauma care following accidents.

Early psychological reactions in parents of children with a life threatening illness within a pediatric hospital setting

RESEARCH IN CONTEXT

Parents of children with life threatening illness or injuries are at elevated risk of distress reactions, involving symptoms of acute stress disorder, depression and anxiety. Currently, the impact of child illness factors is unclear, and to date research systematically examining the prevalence of these psychological reactions across different illness groups with an acute life threat is sparse. This is important to explore given that studies show that parent functioning impacts on the psychological adjustment and recovery of the ill child. WHAT DOES THIS STUDY ADD?: At four weeks following a child's diagnosis of a serious illness, 49-54% of parents met DSM-IV criteria for acute stress disorder, across a number of illness groups, whereas 15-27% of parents were in the moderate/severe range for depression and anxiety, and 25-31% for stress. Results from this study demonstrate that rates and severity of these psychological reactions in parents of seriously ill children do not vary according to illness type.

BACKGROUND

A life threatening childhood illness/injury can lead to significant distress reactions in parents, with independent studies finding such reactions in several different illness groups. To date, there is limited research systematically comparing the prevalence of adverse parental psychological reactions across different childhood illness groups with an acute life threat. This study aimed to investigate the frequency and severity of symptoms of acute traumatic stress, depression, anxiety and general stress in parents, following admission of their child to hospital for a life threatening illness. The study also aimed to explore the relationship between these symptoms, and to determine whether they differ according to illness/injury.

METHODS

Cross-sectional data from a prospective, longitudinal study are reported. Participants were 194 parents of 145 children (49 couples), admitted to cardiology (n=53), oncology (n=40) and pediatric intensive care units (n=52), for serious illnesses/injuries. Parents completed self-report questionnaires within four weeks of hospital admission.

RESULTS

Rates of acute traumatic stress (P=0.262), depression (P=0.525), anxiety (P=0.453) and general stress symptoms (P=0.720) in parents were comparable across illness type, with 49-54% reaching criteria for acute stress disorder, 15-27% having clinical levels of depression and anxiety, and 25-31% for general stress. Anxiety was most strongly associated with acute traumatic stress (r=0.56), closely followed by stress (r=0.52) and depression (r=0.49), with all correlations highly significant (P<0.001).

CONCLUSIONS

These findings provide evidence that the child's medical condition is not associated with parents' experience of clinically significant psychological symptoms, and emphasize the importance for health care providers to be aware of these potential psychological reactions in parents, regardless of the type of illness.

The impact of parental accompaniment in paediatric trauma: a helicopter emergency medical service (HEMS) perspective

Major trauma remains a significant cause of mortality and morbidity in young people and adolescents throughout the western world. Both the physical and psychological consequences of trauma are well documented and it is shown that peri-traumatic factors play a large part in the emotional recovery of children involved in trauma. Indeed, parental anxiety levels may play one of the biggest roles. There are no publically available guidelines on pre-hospital accompaniment, and where research has been done on parental presence it often focuses primarily on the parents or staff, rather than the child themselves. Whilst acknowledging the impact on parents and staff, the importance of the emotional wellbeing of the child should be reinforced, to reduce the likelihood of developing symptoms in keeping with post-traumatic stress disorder. This non-systematic literature review, aims to examine the impact of parental accompaniment to hospital, following paediatric trauma, and to help pre-hospital clinicians decide whether accompaniment would be of benefit to their patient population. The lack of published data does not enable a formal recommendation of parental accompaniment in the helicopter to be mandated, though it should be the preference in land based conveyance. Future research is needed into the emotional recovery of children after trauma, as well as the experiences of patient, parent and staff during conveyance.

Pharmacological modulation of acute trauma memories to prevent PTSD: considerations from a developmental perspective

Estimates of the lifetime prevalence of posttraumatic stress disorder (PTSD) in American adults range from 6.4% to 6.8%. PTSD is associated with increased risk for comorbid major depression, substance use disorder, suicide, and a variety of other mental and physical health conditions. Given the negative sequelae of trauma/PTSD, research has focused on identifying efficacious interventions that could be administered soon after a traumatic event to prevent or reduce the subsequent incidence of PTSD. While early psychosocial interventions have been shown to be relatively ineffective, early (secondary) pharmacological interventions have shown promise. These pharmacological approaches are largely based on the hypothesis that disruption of altered stress hormone levels and the consequent formation of trauma memories could protect against the development of PTSD. The present manuscript reviews the literature regarding the role of peri-traumatic stress hormones as risk factors for the development of PTSD and reviews evidence for the efficacy of exogenously modulating stress hormone levels to prevent/buffer the development of PTSD symptoms. Whereas prior literature has focused primarily on either child or adult studies, the present review incorporates both child and adult studies in a developmental approach to understanding risk for PTSD and how pharmacological modulation of acute memories may buffer the development of PTSD symptoms.

Offspring psychological and biological correlates of parental posttraumatic stress: review of the literature and research agenda

Millions of individuals with posttraumatic stress disorder (PTSD) are parents. A burgeoning literature suggests that offspring of parents with this condition may be at increased risk for psychological problems. The current paper provides an integrative and comprehensive review of the diverse research literature examining the sequelae of parental posttraumatic stress among offspring. Over 100 studies that evaluated psychological and/or biological variables among children of parents with PTSD are reviewed. Findings suggest parental symptoms of posttraumatic stress are uniquely related to an array of offspring outcomes, including internalizing-type problems, general behavioral problems, and altered hypothalamic-pituitary-adrenal axis functioning. Although very little work has directly evaluated mechanisms of transmission, there is increasing support for genetic and epigenetic effects as well as parenting behaviors. These and other mechanisms are discussed; drawing upon findings from other literatures to consider how parental PTSD may impart psychobiological vulnerability upon offspring. We conclude with a detailed discussion of the methodological strengths and challenges of the extant research, along with a recommended agenda for future research in this important area of study.

Posttraumatic stress disorder in children and adolescents: neuroendocrine perspectives

Posttraumatic stress disorder (PTSD) is a syndrome of distress that develops after exposure to traumatic life experiences. Dysregulation of both the hypothalamic-pituitary-adrenal (HPA) axis and the locus caeruleus/norepinephrine-sympathetic nervous system (LC/NE-SNS) is associated with the pathophysiology of the disorder. Studies have demonstrated a neuroendocrine profile unique to adults with PTSD, with centrally elevated corticotropin-releasing hormone (CRH), low cortisol in the periphery, and elevated catecholamines. Traumatic stress experiences in early life are strong predisposing factors for later PTSD development. In addition, early life stress programs the developing brain to overreact to future stressors. In children and adolescents involved in motor vehicle accidents, we found that high evening salivary cortisol and morning serum interleukin 6 concentrations were predictive of PTSD development 6 months later. We demonstrated a progressive divergence of the HPA and LC/NE-SNS axes of the stress system, which may be part of the pathophysiologic mechanism responsible for PTSD maintenance. An initial elevation of cortisol in the aftermath of the trauma, followed by a gradual normalization and finally low cortisol secretion, together with a gradual elevation of catecholamines over time, may represent the natural history of neuroendocrine changes in pediatric PTSD. Thus, the low cortisol concentrations found in adults with PTSD may reflect prior trauma and might represent a biologic vulnerability factor for later PTSD development.

Pharmacological secondary prevention of PTSD in youth: challenges and opportunities for advancement

Child and adolescent posttraumatic stress disorder (PTSD) is associated with an increased risk for a number of deleterious mental and physical health outcomes that if untreated may persist throughout the life course. Efficacious interventions applied soon after trauma exposure have the potential to reduce or prevent the development of PTSD symptoms and their associated impact on behavior and physical health. We review extant research related to treatment-modifiable peritraumatic predictors of pediatric PTSD, which have informed an emerging field of pharmacologic secondary prevention (i.e., occurring shortly following trauma exposure) of PTSD. Challenges and opportunities for early posttrauma PTSD prevention are described. Finally, we offer new models for biologically informed integration of pharmacologic and psychosocial secondary prevention intervention strategies for children and adolescents.

Posttraumatic stress disorder: shifting toward a developmental framework

This article reviews the current classification of posttraumatic stress disorder and its limitations when applied to youth. Distinctions are made between single-event and multiple-event traumas. Diagnosis, neurobiology, treatment development, and treatment outcomes are presented. A summary of current empirical interventions is provided. The authors present implications for future research and for clinical practice.