How it differs from PTSD, why it often underlies addiction, and how it’s treated.
Complex PTSD is a trauma-related condition that develops after prolonged or repeated trauma from which escape was difficult or impossible. Alongside core PTSD symptoms, it involves lasting difficulties with regulating emotions, maintaining a stable sense of self, and sustaining close relationships.
C-PTSD is recognised by the WHO in the ICD-11 as distinct from PTSD, typically arising from ongoing trauma such as sustained childhood abuse or long-term captivity. Beyond intrusive memories and hypervigilance, it adds disturbances in emotional regulation, a persistently negative self-concept, and difficulty with closeness and trust.
PTSD is often linked to a single event; C-PTSD is associated with trauma that is prolonged or repeated, frequently rooted in childhood. C-PTSD is not a “worse” version of PTSD — they are related but distinct, and accurate diagnosis by a qualified clinician guides the shape of treatment.
The relief offered by alcohol, drugs, or compulsive behaviours can feel like the only available way to cope with chronic emotional pain and hypervigilance — self-medication that deepens underlying distress over time. Addressing substance use alone often leaves the driver in place.
Treatment draws on trauma-focused psychotherapy, somatic approaches working directly with the nervous system, and establishing safety before processing traumatic material — especially important where addiction is present. Where trauma and addiction appear together, coordinated care gives the best foundation for recovery.
Can complex PTSD be cured?
Rather than a “cure,” clinicians talk about meaningful, lasting improvement. Many people significantly reduce symptoms and rebuild their sense of self.
Do I need to treat my addiction or my trauma first?
Usually best addressed together rather than strictly in sequence, beginning with establishing safety and stability.
Read more in our overview of trauma and PTSD and how body-based approaches support recovery in our guide to somatic therapy.
Last updated: July 2026. This article is for general educational purposes only and does not constitute medical advice.