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Related Concept Videos

Post-traumatic Stress Disorder01:27

Post-traumatic Stress Disorder

114
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,...
114
Anxiety: Overview01:18

Anxiety: Overview

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Anxiety is a common mental disorder featuring excessive worry, fear, and apprehension, significantly affecting daily life. People with anxiety disorders experience persistent and intense anxiety, interrupting their everyday functioning.
Individuals with anxiety often experience a range of physical and emotional symptoms, including sweating, trembling, tachycardia, and disturbances in sleep patterns. These symptoms vary in intensity and frequency but are generally disruptive and distressing.
344
Panic Disorder01:27

Panic Disorder

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Panic disorder is an anxiety disorder characterized by recurrent and sudden minutes-long episodes of intense fear, known as panic attacks. These attacks may feel like heart attacks and often happen without warning or a specific cause. They can include symptoms such as rapid heart rate, shortness of breath, chest pain, trembling, sweating, dizziness, and a sense of helplessness. During a panic attack, individuals may feel as though they are experiencing a heart attack or are in a...
174
Introduction to Stress and Lifestyle01:27

Introduction to Stress and Lifestyle

177
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...
177
Dissociative Identity Disorder01:30

Dissociative Identity Disorder

203
Dissociative Identity Disorder (DID), previously termed multiple personality disorder, is a complex psychological condition characterized by the presence of two or more distinct identities or personality states. Each identity exhibits unique patterns of behavior, voice, and mannerisms and may possess separate memories and emotional responses. The alternating control between identities can result in memory gaps and challenges in recalling daily activities, often exacerbating the individual's...
203
Dissociative Disorders01:27

Dissociative Disorders

181
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.
Dissociative Fugue
A hallmark feature of dissociative disorders is the dissociative fugue...
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Polar Histogram Visualization of Acute Stress Disorder Scale Scores for Comprehensive Clinical Assessment
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Within Day Variation in Posttraumatic Stress Disorder Symptom Clusters.

Quinn M Biggs, Jing Wang, Rohul Amin

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    |August 18, 2025
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    Summary
    This summary is machine-generated.

    Posttraumatic stress disorder (PTSD) symptoms fluctuate daily, being lowest in the morning and peaking at different times. Understanding this daily variation is key for developing effective PTSD interventions.

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    Area of Science:

    • Psychiatry and Behavioral Sciences
    • Clinical Psychology

    Background:

    • Posttraumatic stress disorder (PTSD) is characterized by four symptom clusters: intrusion, avoidance, negative cognitions/mood, and hyperarousal.
    • Limited research exists on the moment-to-moment intensity variations within these PTSD symptom clusters throughout a single day.

    Purpose of the Study:

    • To investigate the within-day variability of the four core PTSD symptom clusters.
    • To examine how the intensity of posttraumatic stress symptoms (PTSS) changes across different times of the day.

    Main Methods:

    • Utilized an ecological momentary assessment (EMA) methodology with 78 participants diagnosed with PTSD.
    • Collected self-report data on 18 PTSS four times daily for 15 days.
    • Employed linear mixed and linear spline models to analyze symptom variations across six daily time blocks (0700, 1000, 1300, 1600, 1900, 2200).

    Main Results:

    • Significant differences in PTSS and all four symptom clusters were found across the six time blocks.
    • Symptom intensity generally increased throughout the day, starting lowest in the morning.
    • Peak symptom intensity occurred at different times: intrusion peaked around 1000, while avoidance, negative cognitions/mood, and hyperarousal peaked around 1300.

    Conclusions:

    • All four PTSD symptom clusters exhibit significant within-day fluctuations.
    • Symptoms are typically at their lowest in the morning and intensify at different points later in the day.
    • Further research into the neurobiological, psychological, behavioral, and lifestyle factors driving these daily variations is crucial for advancing PTSD understanding and treatment.