Post-Traumatic Stress Disorder (PTSD): Symptoms, Causes and Treatment
Post-Traumatic Stress Disorder (PTSD): Symptoms, Causes and Treatment
Strong reactions after a traumatic event are expected. PTSD is defined by those reactions failing to subside weeks later and beginning to restrict daily life.
The four symptom clusters
PTSD symptoms look scattered but in fact fall into four groups. Diagnosis requires that they persist for more than a month and disrupt functioning.
Symptom clusters
- Re-experiencing: intrusive memories, nightmares, flashbacks
- Avoidance: staying away from people, places, conversations and thoughts that recall the event
- Changes in cognition and mood: guilt, shame, negative beliefs about oneself and the world, emotional numbing
- Hyperarousal: startle response, hypervigilance, disturbed sleep, angry outbursts, difficulty concentrating
Does everyone develop it?
No. Most people who experience a traumatic event have symptoms in the first weeks that then subside on their own. Factors that make the transition to PTSD more likely include the duration and intensity of the event, whether it involved interpersonal violence, a history of previous trauma and — one of the strongest factors — the social support available afterwards.
What actually helps?
The approaches with the strongest evidence in PTSD are the trauma-focused psychotherapies.
- Trauma-focused CBT: including cognitive processing therapy and prolonged exposure
- EMDR: reprocessing the traumatic memory alongside bilateral stimulation
- Medication: some SSRIs have been found effective, generally as an adjunct to psychotherapy
- Stabilisation: where symptoms are severe, safety, sleep and emotion-regulation skills are worked on first
When to seek support
- The one-month ruleIf symptoms persist a month after the event, ask for an assessment.
- Widening avoidanceIf the list of places, people and topics you stay away from keeps growing.
- Sleep and nightmaresIf sleep is disrupted and nightmares recur.
- Substance useAn increase in alcohol or substance use to suppress symptoms is an urgent warning sign.
EMDR for Adolescents and Adults
An approach with research-supported effectiveness in reprocessing traumatic memory.
References
- Bisson, J. I., Cosgrove, S., Lewis, C., & Roberts, N. P. (2015). Post-traumatic stress disorder. BMJ, 351, h6161.
- Shapiro, F. (2018). Eye Movement Desensitization and Reprocessing (EMDR) Therapy: Basic Principles, Protocols, and Procedures (3rd ed.). Guilford Press.