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🛡️ Disorders

🛡️PTSD

Trauma memory, hyperarousal and avoidance — how threat learning overgeneralises and how evidence-based care supports recovery.

Also called: post-traumatic stress · trauma-related disorder · intrusive memory

OverviewOverviewAnatomyFunctionClinicalMethodsPeopleFrontiers
14 min read Frequently asked questions

Reviewed 2026-08·Sources & research·Methodology·Media credits

PTSD
User Washington irving on en.wikipedia · CC BY-SA 3.0

Quick facts

trauma memoryFocus
87/100Research
85/100Awareness
78/100Complexity
88/100Clinical
76/100Debate

PTSD can follow exposure to actual or threatened death, serious injury or sexual violence. Core features include intrusions, avoidance, negative alterations in cognition/mood and hyperarousal lasting beyond a month and impairing life.

Not everyone exposed to trauma develops PTSD. Biology, prior adversity, social support and care access shape risk. Trauma-focused therapies have strong evidence; this page is educational, not treatment.

Educational neuroscience context only — not medical advice, diagnosis or a substitute for emergency or clinical care. If you are in crisis, seek local emergency services or a licensed clinician.

The profile

878578885876
  • Research87
  • Awareness85
  • Complexity78
  • Clinical weight88
  • Plasticity58
  • Live debate76

Seven ways into this topic

01

Overview

Trauma memory, hyperarousal and avoidance — how threat learning overgeneralises and how evidence-based care supports recovery.

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 02

Anatomy

Trauma memory, hyperarousal and avoidance — how threat learning overgeneralises and how evidence-based care supports recovery.

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 03

Function

Trauma memory, hyperarousal and avoidance — how threat learning overgeneralises and how evidence-based care supports recovery.

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 04

Clinical

Trauma memory, hyperarousal and avoidance — how threat learning overgeneralises and how evidence-based care supports recovery.

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 05

Methods

Trauma memory, hyperarousal and avoidance — how threat learning overgeneralises and how evidence-based care supports recovery.

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 06

People

Trauma memory, hyperarousal and avoidance — how threat learning overgeneralises and how evidence-based care supports recovery.

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 07

Frontiers

Trauma memory, hyperarousal and avoidance — how threat learning overgeneralises and how evidence-based care supports recovery.

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Frequently asked questions

Does trauma always cause PTSD?
No. Most people show resilience or recovery; PTSD is a specific syndrome, not a universal response.
Which circuits are most discussed?
Amygdala threat hyper-responsivity, weakened ventromedial PFC regulation, hippocampal contextualisation deficits and salience-network hyperarousal.
What are flashbacks biologically?
Intrusive, sensory-rich memory fragments that feel present — linked to poorly contextualised fear memory rather than ordinary narrative recall.
Is PTSD only a combat disorder?
No. Assault, disasters, accidents, medical trauma and many other exposures can lead to PTSD across civilian populations.
Do trauma-focused therapies retraumatise?
Properly delivered therapies titrate exposure with safety; distress during sessions is monitored. This is clinical work — not DIY reading.
Can medications alone cure PTSD?
Medications can help some symptoms for some people; trauma-focused psychotherapy has particularly strong evidence. Combinations are individual clinical decisions.
What is complex PTSD?
A related construct (ICD) emphasising emotion dysregulation, negative self-concept and relationship difficulties after prolonged trauma — clinical formulations vary by system.
Should I confront trauma memories alone after reading this?
No. Trauma processing belongs with trained clinicians. Self-forced exposure can be harmful.

Sources & research

  1. Post-traumatic stress disorderYehuda R; et al. · 2015 · Nature Reviews Disease PrimersPrimer on PTSD mechanisms and care.DOI
  2. Biological studies of post-traumatic stress disorderPitman RK; et al. · 2012 · Nature Reviews NeuroscienceBiological synthesis of PTSD findings.DOI
  3. Post-Traumatic Stress DisorderShalev A; et al. · 2017 · New England Journal of MedicineClinical review of PTSD.DOI

Media credits

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