View clinical trials related to Posttraumatic Stress Disorder.
Filter by:There is evidence that glucocorticoids have an impact on intrusive memories in patients with posttraumatic stress disorder (PTSD). Hydrocortisone impairs intrusive memory retrieval whereas dexamethasone should strengthen intrusions in PTSD. We, the investigators, want to investigate (1) the effect of these two glucocorticoids on traumatic memories and (2) assess the neural correlates using the script-driven imagery paradigm in the functional magnetic resonance imaging (fMRI) scanner. We hypothesize that intrusive memories are less intensive under hydrocortisone-administration and more intense under dexamethasone-administration comparing both to a placebo-condition. Regarding the neural activation pattern we expect higher activation in the hydrocortisone condition in the amygdala, the hippocampus and the medial prefrontal cortex compared to the placebo-condition and less activation in the dexamethasone-condition compared to the placebo-condition.
The purpose of this study is to examine the effects of glucocorticoid administration following traumatic memory reactivation on psychiatric symptoms in veterans with combat-related PTSD, in addition to examining the effects of glucocorticoid administration following traumatic memory reactivation on physiological responses to veteran's personal combat memories. The following hypotheses will be tested: 1. Subjects who receive an exogenous glucocorticoid after traumatic memory reactivation will demonstrate fewer PTSD and depression symptoms one week later, compared to those who receive a placebo after traumatic memory reactivation. 2. The glucocorticoid reduction effects will be cumulative; that is, reduction will persist, and further post-reactivation glucocorticoid administration will further reduce symptoms 3. Decreases in PTSD and depression symptoms will persist at 1, 3, and 6 months for subjects receiving an exogenous glucocorticoid compared to those subjects receiving placebo 4. Subjects who receive an exogenous glucocorticoid after traumatic memory reactivation will demonstrate decreased physiological responses one week later, compared to those who receive a placebo after traumatic memory reactivation. 5. As with the psychological measures, suppression of the physiological measures will demonstrate both persistence over time and accumulation with subsequent post-reactivation glucocorticoid administration.
This study will compare the responses of subjects with traumatic memories of varying vintages to either propranolol or placebo in a double-blind setting. It is hypothesized that those subjects who receive propranolol will experience less emotional distress when the memory is subsequently reactivated and less spontaneous re-experiences.
This proposal examines trauma and growth responses in the childhood cancer experience. It addresses a number of gaps and unanswered questions in the literature, while integrating several distinct but related lines of research. The rationale for this proposal is outlined briefly as follows: 1. Traumatic stress models focused on pathology dominate pediatric psychosocial oncology research despite empiric evidence of low levels of post-traumatic stress in this population. 2. The assumption of 'cancer as a traumatic event' has biased research designs (including lack of control comparisons) to focus on deficits and pathological outcomes. 3. This deficit-oriented approach has stimulated the development of interventions to treat or prevent PTSD, which may be unnecessary or even harmful. 4. Theoretical and empiric evidence suggests that a more common response to traumatic stress is growth and positive change, but posttraumatic growth phenomenon have been understudied in pediatric populations. 5. Cognitive and personality factors are important determinants of PTSD and positive growth outcomes, and some constructs from positive psychology theory may be particularly relevant in children with cancer. 6. Empirically, parents of children with cancer appear to be at higher risk of PTSD/PTSS, although results are not unequivocal, and the same research biases have applied to parental outcomes. This proposal includes assessment of parental PTSS and PTG, both as an outcome and a predictor of child outcomes.
The purpose of this study is to determine the efficacy of the Child and Family Traumatic Stress Intervention (CFTSI) in preventing the development of Posttraumatic Stress Disorder (PTSD) when implemented within 30 days of a potentially traumatic event.
Purpose: To conduct a pilot study of a cognitive-behavioral treatment (CBT) for PTSD and substance abuse among persons with serious mental illness (SMI) treated in a community setting. Participants: Participants will be 50 volunteer adult individuals with PTSD and substance use disorders (SUD), and SMI who are receiving services at the Freedom House Recovery Center, served through the Orange Person Chatham (OPC) Area Program. Procedures (methods): Participants will be randomly assigned to one of two conditions: 1) the CBT intervention plus treatment as usual; or, 2) treatment as usual.
Exposure to trauma, especially when it manifests as Posttraumatic Stress Disorder (PTSD), results in numerous negative consequences for patients, families, and society. Some of the most frequent, disturbing, and treatment resistant symptoms of PTSD are nightmares and insomnia. This study will examine whether treatments specifically targeted at those sleep disorders can improve clinical outcomes and increase health-related quality of life in individuals recently exposed to war-related trauma. Hypotheses are that treating nightmares and insomnia will improve both nighttime and daytime symptoms of PTSD, as well as quality of life.
The objectives of the current study are 1. to evaluate the efficacy of escitalopram in treatment for post-traumatic stress disorder, 2. to find the structural changes of brain using magnetic resonance imaging and its association with the symptoms reduction, and 3. to look at the differences of brain imaging findings and symptoms changes according to genetic differences of brain-derived neurotrophic factor (a biological molecule facilitating neuronal growth in human).
The purpose of this study is to test the effectiveness of group psychotherapy designed specifically for male veterans and active-duty personnel with Post-traumatic Stress Disorder (PTSD), Major Depressive Disorder (MDD) and with disturbances in their sleep or daily routine.
The purpose of this study is to determine whether a short term programme with internet research on the frequency of skin exchange and guided imagery modification is effective in the treatment of the feeling of being contaminated in female victims of childhood sexual abuse (CSA).