Delayed-onset Posttraumatic Stress Disorder Research Articles

Differential predictors of early- and delayed-onset post-traumatic stress disorder following physical injury: a two-year longitudinal study.

This study aimed to investigate the predictors of both early- and delayed-onset PTSD over a 2-year period following physical injuries. Patients were recruited from a trauma center at a university hospital in South Korea (June 2015 ~ January 2021). At baseline, 1142 patients underwent comprehensive assessments including socio-demographic, pre-trauma, trauma-related, and peri-trauma evaluations. Diagnoses of acute stress disorder (ASD) and subthreshold ASD were also determined using the Clinician-administered PTSD Scale (CAPS). Follow-up assessments at three months included diagnoses of PTSD and subthreshold PTSD using CAPS, and stressful life events (SLEs), with additional evaluations at 6, 12, and 24 months. The analyzed sample comprised 1014 patients followed up at least once after the baseline and 3-month evaluations. PTSD diagnoses were categorized into early-onset (within the first six months after trauma) and delayed-onset (more than six months after trauma). Logistic regression models identified predictors for each group. Early-onset and delayed-onset PTSD were diagnosed in 79 and 35 patients, respectively. Early-onset PTSD was predicted by previous psychiatric disorders, previous traumatic events, ASD and subthreshold ASD diagnoses, and higher anxiety levels. In contrast, delayed-onset PTSD was linked to higher education, higher injury severity, and subthreshold PTSD and SLEs at 3-month follow-up. Distinct predictors were found for early-onset and delayed-onset PTSD. The findings underscore the heterogeneous factors influencing the temporal development of PTSD post-trauma, and may provide valuable guidance for more targeted interventions and improved patient outcomes.

Moderating role of functioning level on the association between suicidal ideation and delayed-onset post-traumatic stress disorder

ObjectivesThis study aimed to investigate the relationship between suicidal ideation at baseline and the development of post-traumatic stress disorder (PTSD) in individuals who have experienced physical injuries, with a specific focus on how this relationship is moderated by the patient's functioning level. MethodsParticipants were consecutively recruited from a trauma center and prospectively followed for two years. At baseline, suicidal ideation was assessed using the Brief Psychiatric Rating Scale, and functioning level was evaluated using the Social and Occupational Functioning Assessment Scale. During the follow-up, PTSD diagnosis was established using the Clinician-Administered PTSD Scale for DSM-5. Binary and multinomial logistic regression analyses were employed to examine the associations between suicidal ideation, functioning level, and PTSD. ResultsOf the 1014 participants analyzed, 114 (11.2%) developed PTSD, with early-onset observed in 79 (7.8%) and delayed-onset in 35 (3.5%) cases. Suicidal ideation at baseline was significantly associated with both early- and delayed-onset PTSD. Notably, higher functioning individuals with baseline suicidal ideation had an increased likelihood of developing delayed-onset PTSD, while this association was not significant in lower functioning individuals, with significant interaction terms. Additionally, suicidal ideation was a consistent predictor of early-onset PTSD across all functioning levels. ConclusionThe impact of baseline suicidal ideation on PTSD varies depending on the individual's functioning level, with higher functioning individuals being more vulnerable to delayed-onset PTSD. These findings underscore the importance of considering functional status in the assessment and intervention of PTSD following physical trauma.

Impact of suicidality on delayed-onset post-traumatic stress disorder is modified by age: A two-year longitudinal study

ObjectivesThis study aimed to investigate the relationship between early suicidality and post-traumatic stress disorder (PTSD) onset in patients with physical injuries, focusing on age as a modifying factor. MethodsAt baseline, 1014 patients were evaluated for suicidality, age divided into younger (<60 years) vs. older (≥60 years) groups, and potential covariates. PTSD was diagnosed at follow-up at 3, 6, 12, and 24 months, and then were categorized into early-onset (within the first six months after trauma) and delayed-onset (more than six months after trauma). Logistic regression models were used after adjusting for covariates. ResultsPresence of suicidality at baseline was significantly associated with delayed-onset PTSD in older but not younger patients with significant interaction terms, whereas it was significantly associated with early-onset PTSD across all age groups. ConclusionAge-specific associations were found between suicidality and PTSD onset. The findings highlight the importance of early suicidality assessment, especially in older patients for ongoing monitoring and support, and underscore the critical need for early PTSD identification and intervention for all ages.

Reduced pre-attentive threat versus nonthreat signal discrimination in clinically healthy military personnel with recurrent combat exposure history: A preliminary event-related potential (ERP) study

Evidence now suggests that traumatic-stress impacts brain functions even in the absence of acute-onset post-traumatic stress disorder (PTSD) symptoms. These neurophysiological changes have also been suggested to account for increased risks of PTSD symptoms later developing in the aftermath of subsequent trauma. However, surprisingly few studies have explicitly examined brain function dynamics in high-risk populations, such as combat exposed military personnel without diagnosable PTSD. To extend available research, facial expression sensitive N170 event-related potential (ERP) amplitudes were examined in a clinically healthy sample of active service military personnel with recurrent combat exposure history. Consistent with several established theories of delayed-onset PTSD vulnerability, higher N170 amplitudes to backward-masked fearful and neutral facial expressions correlated with higher levels of past combat exposure. Significantly elevated amplitudes to nonthreatening neutral facial expressions also resulted in an absence of normal threat-versus-nonthreat signal processing specificity. While a modest sample size and cross-sectional design are key limitations here, ongoing prospective-longitudinal follow-ups may shed further light on the precise aetiology and prognostic utility of these preliminary findings in the near future.

Adjustment strategies adopted by higher education students during COVID-19 pandemic: focus group discussions

IntroductionWith the closure of higher education institutions during the COVID-19 sanitary crisis, students have experienced problems such as interruptions to their education, loss of peer support networks, and mental health issues.ObjectivesThis study aimed to explore adjustment patterns used by students to overcome the impact of the COVID-19 pandemic.MethodsA qualitative descriptive study was developed by carrying out Focus Group Discussions (FGDs). Portuguese students enrolled in education levels above high school, including undergraduate and graduate programs, were considered eligible. Participants were recruited using convenience sampling. Each FGD took approximately 60–90 min.Results Twelve students were participated in 2 FGDs, each one with 6 participants. Mostly were undergraduate students (Bachelor’s degree), in the field of health area. The thematic analysis revealed three main themes. The first theme was related to the personal sphere and included most of adjustment strategies used, namely: pandemic as a “window of opportunity” to be involved in new academic and professional projects; work-life balance by organizing and separating work from private life; self-care through the adoption of healthy lifestyles; being compassionate with others and compliance with sanitary measures. In the social sphere, students evoked new ways of communicating via digital networking to compensate for the lack of physical proximity and stay in safe contact with friends and relatives. In the contextual sphere, students talked about the importance of adapting the “teaching/learning” environment. Tailored teaching support was a significant strategy, especially in maintaining their motivation.ConclusionsSeveral strategies were pointed by students to stay mentally healthy and mitigate delayed-onset post-traumatic stress disorder during the COVID-19 pandemic. Besides, positive coping and hope should be integrated into the standard training of students across all study areas.Disclosure of InterestNone Declared

Ten-Year Follow-Up of Earthquake Survivors

Objective: Few earthquake survivor studies extend follow-up beyond 2 years, leaving the long-term course of earthquake-related posttraumatic stress disorder (PTSD) unknown. This 10-year survey re-assessed the 1999 İzmit, Turkey, earthquake survivors. Methods: İzmit earthquake survivors (N = 198), previously assessed for PTSD/partial PTSD at 1–3 months and 18–20 months post-earthquake, were evaluated 10 years post-event from January 2009 through December 2010. A PTSD self-test (Turkish translation) used DSM-IV criteria to characterize full PTSD, “stringent partial PTSD,” “lenient partial PTSD,” or non-PTSD based on symptom type/amount. Results: Full PTSD prevalence decreased from 37% at 1–3 months post-earthquake to 15% at 18–20 months (P < .001), remaining relatively stable (12%) at 10 years (P = .38). Stringent and lenient partial PTSD decreased between 1–3 months and 18–20 months (from 9% to 3% and from 24% to 12%, respectively; P < .001), remaining stable at 10 years (5% and 9%, respectively; P = .43 and P = .89). PTSD was more prevalent at 1–3 months among those who had a close acquaintance harmed, had been evacuated for long periods (> 1 week), or had more children; this was not observed at 10 years (P = .007–.017). Avoidance symptoms 1–3 months post-earthquake were the best predictor for full PTSD at 10 years (P < .001). Delayed-onset PTSD was observed in only 2% of participants. Conclusions: Full and partial PTSD decreased over the first 2 years post-trauma, but remained stable at 10 years, suggesting PTSD symptoms at around 2 years remain stable at 10 years. Background characteristics did not predict PTSD long-term course, but avoidance level did. Delayed-onset PTSD was relatively rare.

Longitudinal outcomes of post-traumatic stress disorder among the Indian Ocean tsunami survivors in Indonesia

Post-traumatic stress disorder (PTSD) following a disaster could change over time. This study aimed to analyze the risk factors of PTSD among the 2004 Indian tsunami survivors in Aceh and North Sumatra province, Indonesia. It mapped the trajectory recovery pattern of mental illness and examined the medium-term PTSD consequence five and 18 months after the disaster using a large longitudinal survey. Multivariate logistic regression was employed to derive the association between the post-traumatic stress disorder trajectory group and risk factors. The results showed that 15% and 20% of the respondents had persistent medium-term and delayed-onset PTSD, respectively. The vital predictors of persistent PTSD included being female, aged 50 and older, married, and having higher direct trauma exposures to the tsunami. Furthermore, delayed-onset PTSD was associated with negative life events after the tsunami and perceived less social support. The results indicate the necessity to understand the predictors for each PTSD trajectory group's effective intervention regarding mental health after the disaster.

Comparing immediate- and delayed-onset posttraumatic stress disorder: Results from the National Epidemiologic Survey on Alcohol and Related Conditions-III (NESARC-III).

Delayed-onset posttraumatic stress disorder (PTSD) is defined as a period of 6 months or more between trauma exposure and episode onset. Due to the limited research and lack of epidemiological studies on this form of the disorder, we investigated its prevalence, clinical features, and psychiatric comorbidities in a nationally representative sample of U.S. adults. Using National Epidemiologic Survey on Alcohol and Related Conditions-III (NESARC-III) data collected from individuals who met the DSM-5 criteria for PTSD (N = 1,980), we compared delayed- and immediate-onset PTSD with regard to demographic and clinical variables, including comorbidity with psychiatric and substance use disorder (SUD) diagnoses. The overall prevalence of delayed-onset PTSD was 11.0%. Respondents with delayed-onset PTSD were more likely than those with immediate-onset PTSD to report active military combat exposure, more physical and emotional difficulties, and higher levels of pain; these individuals were also more likely to be divorced and less likely to meet the diagnostic criteria for select SUDs. After adjusting for confounding variables, we found a decreased risk of delayed-onset PTSD among individuals with hallucinogen use disorder, OR = 0.30; 95% CI [0.11, 0.87], d = 0.5. We found no significant associations between PTSD onset status and any other SUD, including alcohol use disorder, after adjusting for covariates. Further longitudinal research is required to investigate the temporal associations between PTSD onset and its clinical characteristics and comorbidities, as this could have implications on disorder progression and treatment approaches.

A Case Report of Home-Based Cognitive-Behavioural Treatment for Late-Onset Post-Traumatic Stress Disorder, Triggered by Mask-Wearing in the Context of the COVID-19 Pandemic.

A small but clinically significant number of people experience delayed-onset Post-traumatic stress disorder (PTSD); symptoms of trauma years after the events which are now being re-experienced. The following case report describes the use of the cognitive-behavioural treatment for PTSD with a woman experiencing flashbacks to domestic abuse endured more than 20 years ago. Mask-wearing mandated as a result of the COVID-19 pandemic triggered non-contextualised memories of life-threatening physical violence by an abuser who covered his face. She had been managing her flashbacks and intrusive thoughts with both behavioural and experiential forms of avoidance. An 18-session intervention was provided in her own home due to physical health difficulties. Treatment focused on managing hyper-arousal, reducing thought suppression, in-vivo exposure, stimulus-discrimination and re-contextualising traumatic memories. Regular outcome measurements were kept and results are presented as a single-case experimental design in ‘AB’ format (i.e. baseline period pre intervention). Symptoms of trauma fell to levels non-indicative of PTSD and speak to the evidence base for this modality, even when applied to delayed-onset difficulties in a non-traditional therapy setting. This conclusion is lent extra credence by an experimental design with good internal validity.

A first insight into the clinical manifestation of posttraumatic stress disorder in dementia: a systematic literature review.

Posttraumatic stress disorder (PTSD) is a prevalent disorder worldwide and often co-occurs in dementia. Both have a major impact on disease burden and quality of life. PTSD may be difficult to recognize in dementia and a structured diagnostic method is lacking. In order to get insight into the clinical diagnostics of PTSD in dementia, this systematic literature review evaluates the clinical presentation of PTSD and other relevant symptoms in people with dementia. PubMed, PsycINFO, Embase, and CINAHL were searched for all publications through 30 December 2021. Articles were included which met the following criteria: (i) description of at least one case with a current diagnosis of dementia and co-morbid PTSD; (ii) clinical presentation of symptoms being adequately described; (iii) no difference being made between chronic PTSD, PTSD with re-activation, and delayed onset PTSD. Of the 947 identified abstracts, 13 papers met the inclusion criteria and were included (describing 30 cases). Based on our rating, only one case completely fulfilled the DSM-5 criteria of PTSD. Avoidance was only described in three cases. Most commonly described symptoms were irritability and anger (E1, 9%), persistent negative emotional state (D4, 9%), and sleep disturbances (E6, 8%). In 93% of the case reports, other symptoms were also described, i.e. memory problems (58%), screaming (33.3%), and wandering (22.2%). People with dementia who have experienced a traumatic event seem to present, based on our rating method, with insufficient symptoms to meet all criteria for a PTSD DSM-5 diagnosis. The DSM-5 core symptom of avoidance was absent in most of the cases. Clinical presentation consists mainly of symptoms of irritability, anger, persistent negative emotional state, and sleep disturbances, often accompanied by other symptoms. These findings suggest that older people with dementia may have other symptom presentations than people without dementia.

The Contributing Factors of Delayed-Onset Post-traumatic Stress Disorder Symptoms: A Nested Case-Control Study Conducted After the 2008 Wenchuan Earthquake.

Background: Delayed-onset post-traumatic stress disorder after catastrophes is a major public health issue. However, good designs for identifying post-traumatic stress disorder (PTSD) among earthquake survivors are rare. This is the first nested case-control study to explore the possible factors associated with delayed-onset PTSD symptoms.Methods: A nested case-control study was conducted. The baseline (2011) and follow-up (2018) surveys were utilized to collect data. A total of 361 survivors of the Wenchuan earthquake were investigated and 340 survivors underwent follow-up. The survivors, from the hardest-hit areas, who met the criteria for PTSD were included in the case group, and PTSD-free survivors from the same area, matched for age, were included in the control group, with a ratio of one to four. Conditional logistic regression was used to evaluate the variables' odds ratio (OR).Results: The overall prevalence of delayed-onset PTSD symptoms in survivors of the Wenchuan earthquake was 9.7% (33/340). The unemployed earthquake survivors had a higher risk of developing delayed-onset PTSD symptoms (OR = 4.731, 95% CI = 1.408–15.901), while higher perceived social support was a protective factor against delayed-onset PTSD symptoms (OR = 0.172, 95% CI = 0.052–0.568).Conclusion: Delayed-onset PTSD symptoms, after a disaster, should not be ignored. Active social support and the provision of stable jobs can contribute to the earthquake survivors' mental health.

Delayed-Onset PTSD and Coping Strategies of Chinese College Students During the COVID-19 Pandemic.

Coronavirus disease 2019 (COVID-19) has become a pandemic, and many Chinese college students both in China and abroad were house-quarantined. This study aimed to investigate the prevalence and symptoms of delayed-onset post-traumatic stress disorder (PTSD) and coping strategies among Chinese overseas and domestic college students during this pandemic. A questionnaire was opportunistically distributed to Chinese college students studying both domestically and abroad six months after the COVID-19 outbreak. The questionnaire consisted of IES-R, SCSQ, and SSRS. The average score of delayed-onset PTSD in our population was 21.411 (full mark, 88 points), which reflected a total high level of delayed-onset PTSD symptoms. Statistical differences were shown between students who have been back to universities during the pandemic or not in the hyperarousal dimension (p = 0.016). Three coping strategies were recognized to influence the respondent’s delayed-onset PTSD symptoms, and there was a significant correlation between social support and the coping strategies students chose. A moderate to high level of delayed-onset PTSD was observed among both Chinese overseas and domestic college students 6 months after the COVID-19 outbreak. The useful coping strategies and powerful social supports are significantly important to help them stay mentally healthy and alleviate delayed-onset PTSD during the COVID-19 pandemic.

Symptoms of dementia or post-traumatic stress disorder? Under-recognised behaviours in veterans with dementia

Background: The veteran community are at increased risk of poor mental health and developing dementia as a result of their miliary service, with the potential to lead to delayed onset post-traumatic stress disorder (DOPTSD). The manifestation of DOPTSD may be misinterpreted as behavioural and psychological symptoms of dementia (BPSD), which create difficulties in caring for the person experiencing these distressing symptoms. Aims: This paper details the development of a screening tool for people with dementia, which aims to reframe and contextualise some of the behaviours under the lens of historic traumatic events. Methods: The utility of the screening tool is demonstrated through the presentation and an analysis of an anonymised case study to support nurse practice development. Conclusions: A trauma history tool offers a more comprehensive and interpretive view of the possible historic, trauma-related causes of current behaviours and can aid informal carers' understanding of the stress and distress reactions of their family members.

Symptoms of dementia or post-traumatic stress disorder? Under-recognised behaviours in veterans with dementia

Background: The veteran community are at increased risk of poor mental health and developing dementia as a result of their miliary service, with the potential to lead to delayed onset post-traumatic stress disorder (DOPTSD). The manifestation of DOPTSD may be misinterpreted as behavioural and psychological symptoms of dementia (BPSD), which create difficulties in caring for the person experiencing these distressing symptoms. Aims: This paper details the development of a screening tool for people with dementia, which aims to reframe and contextualise some of the behaviours under the lens of historic traumatic events. Methods: The utility of the screening tool is demonstrated through the presentation and an analysis of an anonymised case study to support nurse practice development. Conclusions: A trauma history tool offers a more comprehensive and interpretive view of the possible historic, trauma-related causes of current behaviours and can aid informal carers' understanding of the stress and distress reactions of their family members.

Long COVID and beyond: post-traumatic stress disorder and delayed-onset post-traumatic stress disorder

Long COVID and beyond: post-traumatic stress disorder and delayed-onset post-traumatic stress disorder

Assessment of behavioural and psychological symptoms of dementia in veterans with a diagnosis of dementia

Admiral Nurses, hosted within the Royal British Legion, sought to reframe behavioural and psychological symptoms of dementia in veterans with a diagnosis of dementia by focusing on the symptoms of possible delayed-onset post-traumatic stress disorder. Through an innovative approach to assessment, the authors propose that a greater understanding of underlying causes for behaviours in this population may afford caregivers a greater understanding of presenting behaviours and provide a more person-centred response to their management.

Does Perceived Social Support Prevent Delayed-Onset Post-Traumatic Stress Disorder (PTSD): A Nested Case-Control Study after the Wenchuan Earthquake

Background: Delayed-onset post-traumatic stress disorder (PTSD) after a catastrophe is a big public health problem. However, good designs for revealing the PTSD among earthquake survivors are rare. This study was the first nested case-control study to explore the relationship between perceived social support and delayed-onset PTSD. Methods: A nested case-control study was conducted. Baseline (year 2011) and follow-up (year 2018) surveys were carried out to collect data. Those survivors met the criteria of positive symptoms of PTSD from the hardest-hit area were identified as the case group and PTSD-free survivors from the same area matched for age were defined as the control group, with a ratio of one to four. A conditional logistic regression was applied to evaluate the odds ratio (OR) of variables used in the study. Results: The unemployed quake survivors had a higher risk of developing delayed-onset PTSD (OR= 4·731, 95% confidence interval = 1·408 to 15·901), while higher perceived social support was a protective factor for suffering from delayed-onset PTSD (OR = 0·172, 95% confidence interval = 0·052 to 0·568). Interpretation: Delayed-onset PTSD after the disaster could not be ignored. Active social support and the provision of stable job would contribute to maintaining the health of earthquake survivors. Funding: This work was supported by the National Natural Science Foundation of China (grant number 71874115). Declaration of Interests: The authors report no conflicts of interest in this work. Ethics Approval Statement: This research was authorized by the Institutional Review Board (IRB) of West China Hospital of Sichuan University.

Prevalence and Determinants of Immediate and Long-Term PTSD Consequences of Coronavirus-Related (CoV-1 and CoV-2) Pandemics among Healthcare Professionals: A Systematic Review and Meta-Analysis.

Background: The COVID-19 pandemic continues to rise. In order to control the COVID-19 pandemic, healthcare professionals have been subjected to increased exposure to work stress. In this systematic review, we aimed at investigating the prevalence and determinants of immediate and long-term post-traumatic stress disorder (PTSD) effects on healthcare professionals by the COVID-19 (SARS CoV-2) and SARS-2003 (SARS CoV-1) pandemics. Methods: This systematic review was conducted according to the recommendations of the Protocols for Systemic Review and Meta-Analysis (PRISMA) statement. Only studies reporting the prevalence of PTSD (frequency, percentage) and related risk factors (adjusted odds ratio (OR)) in healthcare professionals (HCPs) during the SARS CoV-2 and SARS CoV-1 pandemics were included. The following databases were screened: Medline, Embase, PsychINFO, and Health Psychosocial Instrument (HaPI). Results: Six of eight studies reported PTSD symptoms among healthcare professionals during the COVID-19 pandemic in China (three), Singapore (one), India (one), and the United States of America (USA) (two), while two studies reported symptoms during the SARS-2003 pandemic in China (one) and Singapore (one). Sample sizes ranged from 263 to 5062 with a combined total of 10,074 participants. All of the studies self-reported the level of exposure to coronaviruses (CoV-1 and CoV-2) and severity of PTSD. Seven studies reported the prevalence of immediate PTSD and determinants, while one study reported delayed-onset PTSD (3 years after CoV-1 pandemic). Determinants of immediate PTSD were reported for the CoV-2 pandemic, while those for long-term PTSD were reported for the CoV-1 pandemic. Conclusions: A comprehensive understanding of the prevalence and determinants of immediate or long-term pandemic PTSD for healthcare workers can improve prevention, diagnosis, and management. Rigorous research measuring the prevalence of PTSD and its associated risk factors (adjusted OR) for the CoV-2 pandemic are envisaged. Although strategies to resolve immediate PTSD are key, long-term PTSD must not be overlooked.

Associations between the development of PTSD symptoms and longitudinal changes in the DNA methylome of deployed military servicemen: A comparison with polygenic risk scores

ObjectiveMilitary servicemen deployed to war zones are at increased risk of developing posttraumatic stress disorder (PTSD) and successful adaptation to stress is important. Epigenetic alterations in response to trauma have been identified as mechanism of adaptation and may therefore predict deployment-related PTSD symptoms. To date, human studies of epigenetic marks for traumatic stress have been largely constrained by short-term analyses of one or two time points. MethodThis study in a prospective Dutch military cohort (N ​= ​125) examined longitudinal changes of DNA methylation profiles before, as well as one and six months after deployment-related combat exposure in relation to the development of PTSD symptoms over a period of up to five years after deployment. We investigated the predictive value of specific methylation changes for immediate and delayed-onset PTSD symptoms and recovery. This epigenetic prediction was compared to polygenic risk score predictions obtained from the currently available largest genome-wide association study of PTSD. ResultsA total of fourteen genomic regions were identified in which PTSD symptom levels were associated with methylation changes over time (pre-deployment, one, and six months post-deployment). Of these regions, four were significant determinants of longitudinal development of PTSD symptoms. In addition, we observed that, together with risk level during deployment (operating inside or outside the military base) and physical childhood trauma, post-deployment decreases in methylation at a genomic region in EP300/miRNA1281 was associated with a delayed onset of PTSD compared to a resilient profile. Polygenic risk, in contrast, was related to PTSD onset within six months after deployment but was not associated with long term outcomes. ConclusionThe present study suggests predictive utility of changes in DNA methylation for the subsequent development of PTSD symptoms and showed that the currently available measure of polygenic risk is primarily related to non-delayed disease onset.

Delayed Onset of PTSD - A Problem for Diagnosis and Litigation - with Special Reference to Political Imprisonment in the GDR

More often than is generally assumed: according to 2 metaanalyses, an average of about 25% of all cases of PTSD are not definitively diagnosed with post-traumatic stress disorder (PTSD) until 6 months or more after their trauma. Its prevalence varies widely depending on the given population. Delayed onset PTSD is diagnosed in military personnel much more often than in the civilian population (38,2 vs. 15,3%) . The divergence in PTSD's prevalence numbers is attributed to differences in its definition, methodology, and target population, as well as the type of trauma. The longer the observation period, the more likely it is that the PTSD diagnosis will be delayed. Several influencing factors have been identified for its emergence and persistence. Some experts insist that "bridge symptoms" be defined when patients are diagnosed as suffering from delayed onset PTSD. Although frequent, they are not necessarily present. We discuss an example thereof provided by political prisoners in the former GDR exhibiting different courses of PTSD as well as its delayed-manifestation subtype.