Post-Traumatic Stress Disorder (PTSD): Comprehensive Study Notes

1980: "Post-Traumatic Stress Disorder" (PTSD) formally added to the American Psychiatric Association’s Diagnostic and Statistical Manual of Mental Disorders (DSM-III).
- Controversial because it was one of the first psychiatric diagnoses whose causal agent was explicitly “external” to the individual (i.e., the traumatic event rather than an internal pathology).
- Signalled a paradigmatic shift: acknowledgement that the social environment and exceptional events can precipitate mental disorders.

Traumatic events defined as “outside the range of usual human experience.” Examples framed by the original DSM-III committee (“the framers”):
- War and military combat.
- Torture.
- Rape.
- Natural disasters (e.g., earthquakes, hurricanes).
- Human-made disasters (e.g., airplane crashes).
Ordinary life stressors (e.g., divorce, illness, romantic rejection) were excluded and placed under the category Adjustment Disorder because they were viewed as revealing an internal coping deficit rather than an exceptional external stressor.

PTSD symptoms were organised into three interlocking clusters:
1. Cognitive / Intrusion
- Intrusive thoughts, unwanted recollections, and nightmares related to the event.
1. Affective / Numbing & Detachment
- Emotional estrangement from others, restricted range of affect, feelings of numbness.
1. Physiological / Hyperarousal
- Hypervigilance, exaggerated startle response, irritability, sleep disturbance.
Conceptual framing: PTSD arises when a traumatic stressor overwhelms an individual’s adaptive capacity, producing enduring changes in cognition, emotion, and neuro-biology.

Original assumption: Most people cope adequately with routine stress but may be overwhelmed by catastrophic stressors.
Contemporary nuance:
- People differ markedly in trauma thresholds and vulnerability.
- Most exposed individuals do not develop PTSD.
- Nonetheless, extreme events such as rape, torture, genocide, or war are almost universally experienced as severely traumatic.

Lifetime prevalence now recognised as relatively common:
- Men: $3.6\%$ .
- Women: $9.7\%$ (nearly three times higher than men).
Gender disparity attributed in literature to differential exposure (e.g., sexual assault risk) and possible biological or sociocultural factors.

Allowed as PTSD:
- Indirect exposure through victimisation of close family members or loved ones.
- Repeated/Extreme indirect exposure through professional duties (e.g., first responders, crime-scene investigators, journalists embedded in war zones).
Not allowed as PTSD:
- Indirect exposure solely via news media consumption (e.g., TV footage), unless coupled with personal relevance or repeated occupational exposure.

Daytime flashbacks triggered by sensory cues (sounds, smells, environments).
Avoidance of places, activities, or conversations that evoke memories of the trauma.
Hypervigilance: constant scanning of the environment for danger.
Reckless or self-destructive behaviour: substance misuse, risky driving, self-harm.

Survivors may develop incorrect attributions about cause and blame:
- Self-blame: “It was my fault.”
- Over-generalised guilt or shame.
- Catastrophic worldviews:
- “No one can be trusted.”
- “Nothing good will happen to me.”
- “The entire world is dangerous.”
Significance: Such beliefs maintain symptoms and can complicate recovery, necessitating cognitive restructuring interventions (e.g., Trauma-Focused CBT).

Suicidal behaviour: thoughts, plans, or attempts; requires immediate risk assessment.
Substance abuse/dependence: alcohol, prescription drugs, illicit substances used for emotional numbing.
Ethical imperative: Screening for co-occurring disorders and ensuring integrated treatment.

Percentages of individuals developing PTSD well after particular victimisations:
- Physical assault: $13\%$ .
- Sexual assault: $14\%$ .
- Robbery: $6\%$ .
- Property damage from fire: $6\%$ .
- Military combat: $2\%$ .
Temporal course (rape-specific study):
- 12 days post-offense: $94\%$ of rape victims met symptom criteria.
- 3 months post-offense: prevalence declined to $46\%$ , highlighting natural recovery for some yet persistence for nearly half.

Victim services: Need for early-intervention programs (e.g., Psychological First Aid) and long-term trauma-informed care.
Legal arenas: Understanding PTSD crucial for witness credibility, competency, and sentencing (mitigation vs. aggravation arguments).
Occupational health: First-responder organisations must incorporate routine debriefing, resilience training, and confidential mental-health services.
Media ethics: Recognising that vicarious exposure via news usually doesn’t qualify for PTSD, but sensationalist coverage can retraumatise direct victims.

Builds upon earlier lectures on victimology, secondary victimisation, and justice system responses.
Reinforces concept of victim-centred justice: legal processes should minimise retraumatisation and accommodate PTSD-related memory fragmentation.
Complements criminological theories on fear of crime and the societal ripple effects of victimisation.

Climate-change-related disasters predicted to increase trauma exposure; public-health planning essential.
Advances in trauma-specific pharmacotherapy (e.g., propranolol trials) and neurofeedback represent emerging treatments.
Ongoing debate about complex PTSD (C-PTSD)—prolonged, repeated trauma (e.g., childhood abuse)—and its distinction from classical PTSD.