What is Complex PTSD?

Updated August 26th, 2026

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Clinically reviewed by:
James Nagai, LCSW
Therapy
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Complex post-traumatic stress disorder, also called complex PTSD or CPTSD, has gained more attention in recent years, and for good reason.

CPTSD can affect how you see yourself, connect with others, regulate your emotions, and move through everyday life. Understanding these patterns can be an important step toward self-understanding and finding the right support.

Healing from complex trauma is possible, even when progress feels gradual. Sometimes, the changes build slowly until one day you realize, “Things are so much easier now.” Let’s explore CPTSD symptoms, causes, diagnosis, and treatment in Chicago.

Key Takeaways:

  • Complex PTSD is a mental health condition. It features the core symptoms seen in PTSD as well as additional symptoms. These include difficulty with emotion regulation, interpersonal relationships, and self-concept.
  • Complex trauma is the primary cause of CPTSD. Complex trauma refers to repeated or ongoing trauma, which could involve multiple or enduring adverse life experiences, rather than singular events.
  • CPTSD is best treated via continuous therapy so people have enough time to work through and change long-standing symptoms. Common therapies used in CPTSD treatment include trauma-focused cognitive behavioral therapy, narrative therapy, DBT, and EMDR.

What is Complex PTSD?

Complex post-traumatic stress disorder (CPTSD) is a trauma-related mental health condition. It includes the core symptoms of PTSD along with additional difficulties involving emotional regulation, relationships, and a negative sense of self. These additional symptoms are a key feature that distinguishes CPTSD from PTSD.

CPTSD is recognized as an official diagnosis in the World Health Organization’s International Classification of Diseases (ICD-11). However, it is not currently listed as a separate diagnosis in the American Psychiatric Association’s DSM-5-TR, which is commonly used by mental health professionals in the United States. Instead, the DSM-5-TR uses a broader definition of PTSD that includes some symptoms associated with complex trauma and CPTSD.

Recognizing CPTSD as distinct from PTSD helps account for the additional challenges some trauma survivors experience and allows those concerns to be addressed as part of treatment.

Complex PTSD Symptoms

CPTSD features all of the symptom clusters in PTSD (intrusion, avoidance, negative alterations in cognition and mood, alterations in arousal and reactivity) AND three additional symptom clusters.[3]

PTSD and CPTSD both feature:

  • Intrusion. At least one symptom: Unwanted or upsetting memories, flashbacks, nightmares, Emotional distress after exposure to traumatic reminders, or physical reactivity (e.g., increased heart rate, shaking, sweating) after exposure to traumatic reminders.
  • Avoidance. At least one symptom: Avoiding feelings or thoughts related to traumatic event(s) or external trauma-related reminders (e.g., people, places, things).
  • Negative alterations in cognition and mood. At least two symptoms: Inability to recall key features of traumatic event(s), overly negative thoughts and assumptions about yourself or the world, feelings of isolation, exaggerated blame of self or others, negative affect, decreased interest in activities, or difficulty experiencing positive emotions.
  • Alterations in arousal and reactivity. At least two symptoms: Hypervigilance, irritability or aggression, risky or destructive behavior, a heightened startle reaction, difficulty concentrating, or trouble sleeping.

Additional symptom clusters in CPTSD include:

  • Emotional regulation. People with CPTSD experience difficulty regulating emotions. This could manifest in ways such as persistent sadness, trouble controlling anger, or dissociation.
  • Negative self-concept. A negative sense of self, often involving persistent feelings of shame, worthlessness, guilt, or failure.
  • Interpersonal relational dysfunction. Difficulty forming and maintaining healthy relationships. For example, avoiding relationships, distrusting others, being overly self-reliant, or having trouble feeling close to people.

Everyone experiences CPTSD differently. During the diagnostic process, a qualified provider (usually, a psychiatrist) will ensure that you meet the full criteria for the condition, including symptoms and other areas.

What Causes Complex PTSD?

CPTSD can develop after exposure to prolonged, repeated, or ongoing trauma, sometimes referred to as complex trauma.[1] These experiences may occur over months, years, or even decades. Many people with CPTSD have experienced repeated harm or situations where escaping the trauma was difficult or impossible. Trauma may also take multiple forms such as physical, sexual, verbal, or emotional abuse.

Examples of experiences commonly associated with complex trauma include:

  • Childhood abuse or neglect.
  • Ongoing or long term domestic violence or abuse.
  • Captivity or entrapment, such as human trafficking, hostage situations, or being a prisoner of war.
  • Prolonged exposure to war, torture, genocide, or severe community violence.
  • Prolonged or repeated medical trauma.
  • Abuse or exploitation within a cult or other controlling environment.

For some people, particularly those who experienced prolonged trauma early in life, there may not be a clear “before the trauma” or baseline to return to. Recovery can sometimes feel less like returning to who you were before and more like building a sense of safety, identity, and stability that you may not have had the opportunity to develop in the first place.

Not everyone who experiences complex trauma develops CPTSD. Certain experiences and individual factors may increase the likelihood of developing it. Research has identified childhood sexual abuse, physical abuse, childhood emotional neglect, and the female gender as factors associated with a higher risk of CPTSD.[2] However, CPTSD can affect people of any gender and can develop following trauma experienced at different stages of life.

How is Complex PTSD Diagnosed?

While CPTSD isn’t yet in the Diagnostic and Statistical Manual of Mental Disorders, professionals use the criteria in the ICD 11 to detect the condition. Usually, this involves:

  • A verbal interview. Your healthcare provider will ask about your symptoms and personal history. For example, traumatic events, when they happened, what your symptoms are, and when they started.
  • Written questionnaires. You may complete a self-report tool such as the International Trauma Questionnaire (ITQ) before your evaluation.

They will also rule out other possible causes of your symptoms. This is because some CPTSD symptoms can overlap with those seen in other disorders. It is possible for people with CPTSD to have co-occurring disorders. In fact, many do. When this is true, treatment should address both.

Complex PTSD and Attachment Issues

Complex PTSD and attachment issues are deeply interconnected. For many, it’s one of the big impacts CPTSD has on their lives. People with CPTSD are more likely to have insecure attachment styles, which could refer to:

  • Anxious attachment. One may fear being alone or being left to the point that it affects one's ability to have a healthy relationship (e.g., excessive reassurance-seeking, overanalyzing texts and tone of voice, people-pleasing, often jumping from one relationship to another).
  • Avoidant attachment. One may struggle to get close to others or to leave before the other person can, even if they deeply desire a relationship (e.g., pulling away, shutting down, or leaving when a relationship starts to feel serious).
  • Disorganized attachment. One experiences a combination of both anxious and avoidant attachment symptoms.

Attachment theory asserts that the relationship you have with your caregivers as a child can affect the way you “attach” (trust, relate to, and form relationships with) others. Notably, a very prevalent form of complex trauma is harm perpetuated by caregivers, who are typically our first attachment figures.

If you have an insecure attachment style, you can become more securely attached. This is just one example of what can be improved through therapy. Interpersonal effectiveness, communication, and working toward a secure attachment style are common goals in CPTSD treatment.

Complex PTSD Treatment

Therapy is the main treatment for CPTSD. Seeing a trauma-informed therapist is strongly recommended for people with CPTSD. Trauma-informed providers actively avoid retraumatization and deeply understand the effects of complex trauma. Since the behavioral patterns and beliefs seen in CPTSD can be deeply ingrained (e.g., “I am bad,” “I cannot be fixed”), long-term therapy is often ideal.

Some of the best therapies for CPTSD include:

  • Trauma-focused cognitive behavioral therapy (TF-CBT).
  • Eye movement desensitization and reprocessing (EMDR).
  • Narrative therapy.
  • Dialectical behavior therapy (DBT).

Complex PTSD treatment should always be personalized. Everyone responds best to different therapies for PTSD and Complex PTSD symptoms. Many people benefit most from a combination of different types of therapy for PTSD treatment on the path of overcoming and learning to navigate CPTSD symptoms.

Additional treatments and resources can be combined with therapy. For example, many people with PTSD and CPTSD take medication alongside therapy. Structured trauma treatment programs can be incredibly valuable when a person needs more intensive therapy than weekly or biweekly therapy for PTSD treatment can provide.

Find a Complex PTSD Therapist Near You

Clarity Clinic provides compassionate, trauma-informed treatment for complex PTSD (CPTSD) in Chicago and throughout Illinois. We offer in-person care at our Loop, River North, Lakeview Broadway, Lakeview Belmont, Evanston, and Arlington Heights locations, as well as online mental health services throughout Illinois.

Depending on your needs, treatment may include:

  • Therapy for CPTSD symptoms
  • Medication management (psychiatric services)
  • PHP and IOP programs
  • Diagnostic services

Finding a provider or treatment team you trust can make a meaningful difference in your growth and recovery. If you have questions or are ready to start treatment for complex PTSD, call your nearest Clarity Clinic location, contact us online, or book an appointment today.

See How We Can Help

Related Readings:

  • Is PTSD The Same as Trauma
  • What is PTSD? Post-Traumatic Stress Disorder 101

Complex PTSD FAQs:

References

[1] When trauma becomes complex. (2025, March 1). https://www.apa.org/monitor/2025/03/ce-complex-ptsd

[2] What are the predictive variables that increase the risk of developing a complex trauma? A meta-analysis - sciencedirect. (2023, December, 15). https://www.sciencedirect.com/science/article/abs/pii/S0165032723011825

[3] Complex posttraumatic stress disorder: The need to consolidate a distinct clinical syndrome or to reevaluate features of psychiatric disorders following interpersonal trauma? (2018, March 22). https://pmc.ncbi.nlm.nih.gov/articles/PMC5862650/

Author
James Nagai, LCSW

My name is James “Jimmy” Nagai. I work with children, teens, adults, and families. I utilize evidence-based approaches, including Cognitive Behavioral Therapy (CBT), play therapy, motivational interviewing, solution-focused therapy, and expressive therapies.

I also collaborate closely with families, schools, and support systems to provide well-rounded, individualized care.

I studied Psychology, Social Work, Sociology, and Family Development at the University of Dayton. I earned my Master of Social Work degree with a focus on Children and Families from Loyola University Chicago. I have experience working in community mental health clinics, social service agencies, and family-focused settings.

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