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Related Concept Videos

Post-traumatic Stress Disorder01:27

Post-traumatic Stress Disorder

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Post-traumatic stress disorder (PTSD) is a psychiatric condition that arises following exposure to traumatic events such as natural disasters, forced displacement, or severe accidents. It significantly impairs individuals' ability to cope with daily activities and disrupts their emotional and psychological equilibrium.
Symptoms and Behavioral Manifestations
A spectrum of distressing symptoms characterizes PTSD. Recurrent flashbacks, where individuals involuntarily relive traumatic events,...
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Introduction to Stress and Lifestyle01:27

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Stress is a multifaceted response to events perceived as challenging or threatening, highlighting physical, emotional, cognitive, and behavioral reactions. Physically, stress can lead to fatigue, sleep disruptions, and various health issues such as frequent colds, chest pains, and nausea. Emotionally, it can manifest as anxiety, depression, irritability, and anger triggered by both minor and major life events. Cognitively, it may result in difficulty in concentration, memory, and...
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Traumatic Memory01:20

Traumatic Memory

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Emotionally traumatic events often lead to memories that are exceptionally vivid and enduring, sometimes persisting with remarkable clarity throughout an individual's life. A classic example of this phenomenon is a person who survives a car accident. Even years later, they may recall every detail of the event with startling accuracy — the screeching of the tires, the jarring impact, and the acrid smell of burning rubber. Such vividness contrasts sharply with how an individual...
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Psychological Responses to Stress01:20

Psychological Responses to Stress

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Psychological responses to stress encompass the various cognitive and emotional reactions individuals experience when faced with challenging or threatening situations, such as a job loss. Prolonged exposure to stressors can disturb emotional balance, increasing negative emotions (e.g., anxiety and sadness) and diminishing positive emotions (e.g., joy and satisfaction). These persistent emotional shifts are associated with an increased risk of both physical illness and mental health issues, such...
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Psychological and Sociocultural Causes of Schizophrenia01:29

Psychological and Sociocultural Causes of Schizophrenia

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Schizophrenia, a complex psychiatric disorder, has been historically misunderstood. Early psychological theories attributed its origins to childhood trauma and unresponsive parenting. However, contemporary research largely rejects these notions, favoring the vulnerability-stress hypothesis. This model proposes that individuals with a genetic predisposition to schizophrenia may develop the disorder following exposure to significant environmental stressors. Notably, studies on high-risk...
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Dissociative Disorders01:27

Dissociative Disorders

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Dissociative disorders represent complex psychological conditions characterized by disruptions in consciousness, memory, identity, or perception. These disruptions cause individuals to experience a disconnection from their thoughts, emotions, and memories. The phenomenon is not merely an occasional lapse in attention but a profound alteration in mental functioning that can severely impact daily life.
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Predicting Post-Disaster Post-Traumatic Stress Disorder Symptom Trajectories: The Role of Pre-Disaster Traumatic

Sydney T Johnson1, Susan M Mason1, Darin Erickson1

  • 1Division of Epidemiology and Community Health, University of Minnesota School of Public Health, 1300 S. 2nd Street, Suite 300, Minneapolis, MN 55454, USA.

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Previous trauma history had a minor effect on developing chronic PTSD after Hurricane Katrina. However, it moderately reduced the likelihood of recovery, suggesting indirect impacts on disaster mental health.

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Area of Science:

  • Psychiatry
  • Trauma Studies
  • Disaster Mental Health

Background:

  • Disasters cause significant mental health issues, with 30-40% of victims developing post-traumatic stress disorder (PTSD).
  • Individual differences in coping with disaster trauma are not fully understood.
  • Prior trauma history may influence psychological responses to subsequent traumatic events.

Purpose of the Study:

  • To investigate the predictive role of pre-disaster trauma on PTSD trajectories.
  • To analyze long-term PTSD outcomes in Hurricane Katrina survivors over 12 years.

Main Methods:

  • Latent class growth analysis was used to identify PTSD trajectories.
  • A sample of Hurricane Katrina survivors was followed for 12 years post-disaster.
  • The impact of pre-disaster trauma on PTSD trajectories was assessed, adjusting for covariates.

Main Results:

  • Four PTSD trajectories were identified: Resistant (49.0%), Recovery (29.3%), Delayed-Onset (8.0%), and Chronic-High (13.7%).
  • Pre-disaster trauma showed a small positive association with chronic PTSD and a moderate negative association with the Recovery trajectory.
  • The link between pre-disaster trauma and chronic PTSD was largely explained by Katrina-related trauma severity.

Conclusions:

  • Pre-disaster trauma has a limited direct effect on chronic PTSD after disasters.
  • Pre-disaster trauma may indirectly influence PTSD development by exacerbating the impact of disaster-specific trauma.
  • Findings highlight the need for disaster preparedness strategies that consider individuals' prior trauma exposure.