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.

Cognitive behavioral therapy for the treatment of pediatric posttraumatic stress disorder: a review and meta-analysis

BACKGROUND AND OBJECTIVES

There is no clear gold standard treatment for childhood posttraumatic stress disorder (PTSD). An annotated bibliography and meta-analysis were used to examine the efficacy of cognitive behavioral therapy (CBT) in the treatment of pediatric PTSD as measured by outcome data from the Child Behavior Checklist (CBCL).

METHOD

A literature search produced 21 studies; of these, 10 utilized the CBCL but only eight were both 1) randomized; and 2) reported pre- and post-intervention scores.

RESULTS

The annotated bibliography revealed efficacy in general of CBT for pediatric PTSD. Using four indices of the CBCL, the meta-analysis identified statistically significant effect sizes for three of the four scales: Total Problems (TP; -.327; p = .003), Internalizing (INT; -.314; p = .001), and Externalizing (EXT; -.192; p = .040). The results for TP and INT were reliable as indicated by the fail-safe N and rank correlation tests. The effect size for the Total Competence (TCOMP; -.054; p = .620) index did not reach statistical significance.

LIMITATIONS

Limitations included methodological inconsistencies across studies and lack of a randomized control group design, yielding few studies for meta-analysis.

CONCLUSIONS

The efficacy of CBT in the treatment of pediatric PTSD was supported by the annotated bibliography and meta-analysis, contributing to best practices data. CBT addressed internalizing signs and symptoms (as measured by the CBCL) such as anxiety and depression more robustly than it did externalizing symptoms such as aggression and rule-breaking behavior, consistent with its purpose as a therapeutic intervention.

Posttraumatic stress disorder in children and adolescents: a review of psychopharmacological treatment

PTSD in children and adolescents differs from the adult disease. Therapeutic approaches involve both psychotherapy and psychopharmacotherapy.

OBJECTIVES

The current paper aims at reviewing studies on psychopharmacological treatment of childhood and adolescent PTSD. Additionally, developmental frameworks for PTSD diagnosis and research along with an experimental model of quenching and kindling in the context of stress exposure are presented. We conducted an extensive literature search of reviews on psychopharmacotherapy as well as studies on psychopharmacological treatment for PTSD among children and adolescents. We used the database PubMed and focused on the time period of the last 10 years up to January 2009. Pertinent earlier papers were also included.There are a limited number of studies specifically assessing the psychopharmacological treatment of PTSD in children and adolescents. The vast majority of them lack verification in RCTs. Only the use of imipramine, divalproex sodium and sertraline were already evaluated in RCTs. Future studies should take into account developmental approaches to the diagnosis and treatment of PTSD in children and adolescents. In this context, different underlying neurobiological patterns, which are reflected in distinct clinical symptomatology, require a precise investigation and a symptom-orientated psychopharmacological approach.