5.3 Trauma- and Stressor-Related Disorders

5.3 Trauma- and Stressor-Related Disorders

Quick Answer: Trauma- and stressor-related disorders are psychological disturbances precipitated by exposure to traumatic or stressful life events. Posttraumatic Stress Disorder (PTSD) requires qualifying Criterion A trauma exposure and symptoms across four distinct clusters (intrusion, avoidance, negative cognitive/mood alterations, and hyperarousal) lasting for more than 1 month. Acute Stress Disorder (ASD) covers the initial window from 3 days to 1 month post-exposure. Adjustment Disorders represent disproportionate emotional reactions to non-life-threatening stressors developing within 3 months. Gold-standard trauma treatments include TF-CBT (PRACTICE model), EMDR (8 phases), Prolonged Exposure (in vivo and imaginal), and Cognitive Processing Therapy (CPT).

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Posttraumatic Stress Disorder (PTSD)

PTSD was moved from the anxiety disorders category into the dedicated Trauma- and Stressor-Related Disorders chapter in DSM-5. The diagnostic criteria apply to adults, adolescents, and children older than 6 years (with a developmentally sensitive preschool criteria set for children 6 and younger).

Criterion A: Qualifying Traumatic Exposure

Exposure to actual or threatened death, serious injury, or sexual violence in one (or more) of the following four ways:

1. Direct experience of the traumatic event.
2. Witnessing, in person, the event as it occurred to others.
3. Learning that the traumatic event occurred to a close family member or close friend. In cases of actual or threatened death of a family member or friend, the event must have been violent or accidental.
4. Experiencing repeated or extreme exposure to aversive details of traumatic events (e.g., first responders collecting human remains, police officers repeatedly exposed to details of child sexual abuse).

Exam Trap / Criterion A Boundary: Criterion A explicitly states that exposure through electronic media, television, movies, or pictures does NOT qualify, unless this exposure is directly work-related (such as specialized law enforcement viewing child exploitation materials).

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The Four Symptom Clusters (Duration > 1 Month)

Following Criterion A exposure, the individual must present with symptoms across all four distinct symptom clusters, persisting for more than 1 month:

1. Criterion B: Intrusion Symptoms (≥1 Required)

• Recurrent, involuntary, and intrusive distressing memories of the traumatic event.
• Recurrent distressing dreams in which the content and/or affect of the dream are related to the event.
• Dissociative reactions (e.g., flashbacks) in which the individual feels or acts as if the traumatic event were recurring (ranging from brief flashes to complete loss of awareness of present surroundings).
• Intense or prolonged psychological distress at exposure to internal or external cues that symbolize or resemble an aspect of the traumatic event.
• Marked physiological reactions to internal or external cues that symbolize or resemble an aspect of the traumatic event.

2. Criterion C: Persistent Avoidance (≥1 Required)

• Avoidance of or efforts to avoid distressing memories, thoughts, or feelings about or closely associated with the traumatic event (internal avoidance).
• Avoidance of or efforts to avoid external reminders (people, places, conversations, activities, objects, situations) that arouse distressing memories, thoughts, or feelings about the trauma.

3. Criterion D: Negative Alterations in Cognitions and Mood (≥2 Required)

• Inability to remember an important aspect of the traumatic event (typically dissociative amnesia; not due to head injury, alcohol, or drugs).
• Persistent and exaggerated negative beliefs or expectations about oneself, others, or the world (e.g., "I am bad," "No one can be trusted," "The world is completely dangerous").
• Persistent, distorted cognitions about the cause or consequences of the traumatic event that lead the individual to blame himself/herself or others.
• Persistent negative emotional state (e.g., fear, horror, anger, guilt, or shame).
• Markedly diminished interest or participation in significant activities.
• Feelings of detachment or estrangement from others.
• Persistent inability to experience positive emotions (e.g., inability to feel happiness, satisfaction, or love).

4. Criterion E: Alterations in Arousal and Reactivity (≥2 Required)

• Irritable behavior and angry outbursts (with little or no provocation) typically expressed as verbal or physical aggression toward people or objects.
• Reckless or self-destructive behavior.
• Hypervigilance.
• Exaggerated startle response.
• Problems with concentration.
• Sleep disturbance (e.g., difficulty falling or staying asleep or restless sleep).

Specifiers for PTSD:

• With Dissociative Symptoms: The individual meets full PTSD criteria and experiences persistent or recurrent symptoms of either Depersonalization (feeling detached from one's mind, body, or self) or Derealization (unreality of surroundings; world feels dreamlike, distant, or distorted).
• With Delayed Expression: Full diagnostic criteria are not met until at least 6 months after the traumatic event (though some symptoms may manifest immediately).

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Acute Stress Disorder (ASD)

Acute Stress Disorder shares the exact same Criterion A trauma exposure definition as PTSD. It reflects an acute stress response occurring immediately in the wake of severe trauma.

Diagnostic Criteria:

• Presence of nine (or more) symptoms from any of the five categories: intrusion, negative mood, dissociation, avoidance, and arousal.
• Duration: The disturbance lasts for 3 days to 1 month after trauma exposure.
• Diagnostic Conversion Rule: Symptoms emerging within 3 days are categorized as normal acute stress reactions. If symptoms satisfy criteria from 3 days up to 1 month, ASD is diagnosed. If symptoms persist beyond 1 month, the diagnosis is formally re-evaluated and converted to PTSD.

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Adjustment Disorders

Adjustment Disorders represent clinically significant emotional or behavioral symptoms in response to an identifiable psychosocial stressor (e.g., marital conflict, divorce, job loss, medical diagnosis, financial difficulties) that does not qualify as Criterion A trauma.

Diagnostic Rules:

1. Symptoms must develop within 3 months of the onset of the stressor.
2. Symptoms are clinically significant as evidenced by one or both:
   • Marked distress that is out of proportion to the severity or intensity of the stressor (taking into account external context and cultural factors).
   • Significant impairment in social, occupational, or other important areas of functioning.
3. The disturbance does not meet the criteria for another mental disorder (e.g., MDD, GAD) and is not merely an exacerbation of a preexisting condition.
4. Symptoms do not represent normal bereavement.
5. The 6-Month Termination Rule: Once the stressor or its consequences have terminated, the symptoms do not persist for more than an additional 6 months. If symptoms persist past 6 months after the stressor's resolution, the diagnosis must be revised to another disorder (such as GAD or PDD).

Six Subtypes of Adjustment Disorder:

• With depressed mood
• With anxiety
• With mixed anxiety and depressed mood
• With disturbance of conduct
• With mixed disturbance of emotions and conduct
• Unspecified

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Trauma and Stressor Comparison Table

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Attachment Disorders: RAD vs. DSED

Both Reactive Attachment Disorder (RAD) and Disinhibited Social Engagement Disorder (DSED) arise from an identical childhood etiology: severe pathogenic care / social neglect (persistent deprivation of basic emotional needs, frequent changes in primary caregivers, or institutional rearing with high child-to-caregiver ratios) occurring before age 5.

Reactive Attachment Disorder (RAD)

• Core Pattern: A consistent pattern of inhibited, emotionally withdrawn behavior toward adult caregivers.
• Manifested by: The child rarely or minimally seeks comfort when distressed, and rarely or minimally responds to comfort when distressed.
• Persistent social and emotional disturbance: Minimal social and emotional responsiveness to others, limited positive affect, and episodes of unexplained irritability, sadness, or fearfulness during nonthreatening interactions with adult caregivers.
• Clinical Picture: An emotionally frozen, detached, withdrawn child who does not utilize caregivers for safety or regulation.

Disinhibited Social Engagement Disorder (DSED)

• Core Pattern: A pattern of behavior in which a child actively approaches and interacts with unfamiliar adults.
• Manifested by at least two of the following:
  1. Reduced or absent reticence in approaching and interacting with unfamiliar adults.
  2. Overly familiar verbal or physical behavior (violating cultural social boundaries).
  3. Diminished or absent checking back with adult caregiver after venturing away, even in unfamiliar settings.
  4. Willingness to go off with an unfamiliar adult with minimal or no hesitation.
• Clinical Picture: An indiscriminate, socially disinhibited child who lacks fear of strangers and wanders off with unknown adults.

Evidence-Based Trauma Treatments

1. Trauma-Focused Cognitive Behavioral Therapy (TF-CBT)

Developed by Judith Cohen, Anthony Mannarino, and Esther Deblinger, TF-CBT is an empirically supported, components-based psychotherapy for children and adolescents (ages 3–18) and their non-offending caregivers who have experienced severe trauma.

• The PRACTICE Model Components:
  • P — Psychoeducation & Parenting Skills: Normalizing trauma reactions, educating on trauma triggers, and training parents in behavior management and positive reinforcement.
  • R — Relaxation: Somatic regulation through diaphragmatic breathing, progressive muscle relaxation, and visualization.
  • A — Affective Expression & Regulation: Emotion identification, expanding emotional vocabulary, and building affect modulation skills.
  • C — Cognitive Coping: Teaching the cognitive triangle (thoughts, feelings, behaviors) and restructuring unhelpful cognitions.
  • T — Trauma Narrative & Processing: Gradual, systematic imaginal exposure where the child creates a narrative (book, poem, drawing, audio recording) of their trauma history, processing thoughts and feelings to resolve avoidance.
  • I — In Vivo Exposure: Gradual mastery of non-dangerous trauma reminders in real-world settings.
  • C — Conjoint Parent-Child Sessions: Facilitating open communication, sharing the trauma narrative with the caregiver, and rebuilding relational security.
  • E — Enhancing Safety & Future Development: Personal safety planning, body boundaries, refusal skills, and healthy coping mechanisms.

2. Eye Movement Desensitization and Reprocessing (EMDR)

Developed by Francine Shapiro, EMDR is grounded in the Adaptive Information Processing (AIP) model. The AIP model posits that pathology arises when traumatic memories are inadequately processed and stored in state-specific, fragmented neurobiological memory networks. Bilateral stimulation (BLS)—via alternating horizontal saccadic eye movements, auditory tones, or tactile taps—stimulates the brain's innate information-processing mechanisms to integrate the traumatic memory into adaptive neural networks.

The Eight Phases of EMDR:

1. Phase 1: History Taking and Treatment Planning: Client assessment, identifying target memories (earliest, worst, current triggers, future template).
2. Phase 2: Preparation: Establishing therapeutic rapport, psychoeducation, developing emotional stability, grounding skills, and creating the Safe/Calm Place resource.
3. Phase 3: Assessment: Accessing the target memory and identifying its specific components:
   • Target image representing the worst moment.
   • Negative Cognition (NC): Current negative self-referencing belief (e.g., "I am powerless," "I am defective").
   • Positive Cognition (PC): Desired adaptive belief (e.g., "I am in control now," "I am worthy").
   • Validity of Cognition (VoC): Rating how true the PC feels on a 1 to 7 scale (1 = completely false, 7 = completely true).
   • Emotional response and rating on the Subjective Units of Disturbance (SUD) scale from 0 to 10 (0 = neutral/no disturbance, 10 = highest disturbance imaginable).
   • Somatic sensation location in the body.
4. Phase 4: Desensitization: Application of bilateral stimulation (BLS) while the client tracks the target memory and associations until the SUD drops to 0 or 1.
5. Phase 5: Installation: Strengthening the Positive Cognition using BLS until the VoC reaches 7.
6. Phase 6: Body Scan: Holding the target memory and PC in mind while scanning the body for residual physical tension; BLS is applied to clear somatic distress.
7. Phase 7: Closure: Debriefing, returning the client to equilibrium using grounding techniques, and maintaining a log between sessions.
8. Phase 8: Re-evaluation: Reviewing progress at the start of the subsequent session to verify that treatment gains are maintained.

3. Prolonged Exposure (PE)

Pioneered by Edna Foa, PE is rooted in emotional processing theory and classical extinction. It targets pathological fear structures through two primary exposure mechanisms:

• In Vivo Exposure: Repeated, systematic confrontation with safe real-world people, locations, and situations that the client avoids due to trauma associations.
• Imaginal Exposure: Repeated, detailed verbal recounting of the traumatic memory in the present tense with closed eyes for 30–45 minutes, followed by emotional processing. This promotes habituation, emotional integration, and differentiation between the past trauma and present safety.

4. Cognitive Processing Therapy (CPT)

Developed by Patricia Resick, CPT is a 12-session manualized cognitive therapy focusing on how trauma survivors interpret trauma and develop "stuck points" (distorted automatic thoughts and overgeneralized beliefs).

• Assimilation: Distorting the trauma memory to fit preexisting beliefs (e.g., "It happened because I wore that outfit" → self-blame).
• Over-Accommodation: Radically altering beliefs about the world to extremes (e.g., "Because this happened, no man can ever be trusted").
• Accommodation: The balanced, healthy goal of CPT: integrating the trauma reality into flexible, nuanced beliefs.
• Five Core Themes: CPT systematically targets beliefs regarding Safety, Trust, Power/Control, Esteem, and Intimacy.