Complex Trauma Explained: Understanding C-PTSD
Complex post-traumatic stress disorder (C-PTSD) develops after prolonged or repeated trauma, usually in situations where escape was difficult or impossible, such as childhood abuse or neglect, or long-term family violence. It includes the core symptoms of PTSD plus lasting difficulties with emotional regulation, self-worth and relationships. C-PTSD is recognised in the World Health Organization's ICD-11. It's treatable, usually with a phased approach that builds safety and stability before processing traumatic memories.
What is complex trauma?
Complex trauma refers to repeated, ongoing traumatic experiences, often within relationships that should have been safe. Examples include:
physical, sexual or emotional abuse in childhood
chronic neglect
growing up with a parent whose mental illness, substance use or violence made home unpredictable
long-term family or intimate partner violence
ongoing bullying or coercive control
community violence, war or displacement
Because these experiences often happen during childhood, while the brain and sense of self are still developing, they can shape how a person sees themselves, regulates emotion and relates to others well into adulthood.
C-PTSD vs PTSD
PTSD involves three clusters of symptoms:
Re-experiencing the trauma in the present (flashbacks, intrusive memories, nightmares)
Avoidance of reminders
A persistent sense of current threat (hypervigilance, strong startle response)
C-PTSD, as defined in ICD-11, includes all of these plus three further areas, known as "disturbances in self-organisation":
Emotion regulation difficulties: feelings that are intense and hard to settle, or the opposite, numbness and shutdown
Negative self-concept: persistent beliefs of being worthless, defeated or damaged, often with deep shame or guilt
Relationship difficulties: trouble feeling close to others or sustaining relationships
The DSM-5-TR, used widely in Australia alongside ICD-11, doesn't have a separate C-PTSD diagnosis, although its PTSD criteria include some related symptoms. You may hear clinicians use either framework.
How complex trauma can show up in adult life
People with complex trauma histories often don't identify as trauma survivors. They come to therapy for something else:
long-standing anxiety or depression that hasn't responded well to treatment
a harsh inner critic and chronic shame
people-pleasing, difficulty saying no or fear of conflict
feeling "too much" or "not enough" in relationships
being drawn to relationships that repeat old patterns
dissociation: zoning out, feeling unreal or losing time
difficulty identifying what they feel or need
chronic physical tension and stress-related health issues
These patterns made sense as survival strategies in an unsafe environment. The difficulty is that they continue long after the danger has passed.
The role of attachment
Our earliest relationships teach us whether others are safe and whether our needs matter. When caregivers were also the source of fear, or were consistently unavailable, children develop ways of coping that protect the relationship at their own expense. In adulthood, these can show up as anxious, avoidant or disorganised attachment patterns. Our article on attachment styles explains these in more detail.
Attachment-based therapy works with these patterns directly, often using the therapy relationship itself as a place to experience consistent, reliable connection.
How C-PTSD is treated
Treatment is usually phased.
Phase 1: Safety and stabilisation
Building trust with your therapist and developing skills to manage overwhelming emotions and dissociation. DBT skills (distress tolerance, emotion regulation), grounding, mindfulness and body-based techniques are often used here. This phase is not a waiting room. For many people, learning to regulate emotion brings substantial relief.
Phase 2: Processing traumatic memories
When there's enough stability, trauma-focused approaches such as trauma-focused CBT or EMDR can be used to process specific memories. This is paced carefully and may be revisited as needed.
Phase 3: Reconnection
Rebuilding identity, relationships and a sense of future, and applying new patterns in everyday life.
Schema therapy
Schema therapy was developed for long-standing patterns that began in childhood, which makes it relevant for many people with complex trauma. It identifies core "schemas" (such as abandonment, defectiveness or mistrust) and works to meet the emotional needs that weren't met. See our explainer on schema therapy.
Other helpful approaches
Psychodynamic work to understand how the past lives on in the present
ACT to reduce the struggle with painful thoughts and reconnect with values
Compassion-focused approaches to soften chronic shame and self-criticism
Somatic and body-based approaches to help the nervous system feel safe again
How long does treatment take?
Complex trauma usually takes longer to treat than single-incident PTSD, often many months and sometimes longer. Progress isn't always linear, and that's normal. Many people notice meaningful improvements in emotional regulation and self-understanding well before the work is "finished".
Support at Satya Psychology
We work with trauma using CBT, ACT, DBT skills, attachment-based and somatic approaches, with a psychodynamic lens to understand deeper patterns. Our work is grounded in trauma-informed care, which means you set the pace, you have choice, and safety comes first.
Sessions are available in person in Nobby Beach, by telehealth, or through Walk and Talk therapy on the Gold Coast. Read our trauma therapy guide for an overview, or book a session.
Free support is available from the Blue Knot Helpline on 1300 657 380 (9am to 5pm, seven days), which specialises in complex trauma, and Lifeline on 13 11 14 (24/7).
This article is general information and isn't a diagnosis. In an emergency, call 000.