What Is Complex PTSD?

Complex PTSD is a trauma-related condition associated with prolonged, repeated, or inescapable trauma, especially where the trauma occurred in close relationships or over a significant period of time. This may include childhood abuse or neglect, domestic violence, sexual abuse, trafficking, captivity, coercive control, repeated emotional humiliation, or other forms of chronic interpersonal trauma.

Like PTSD, complex PTSD can involve intrusive memories, nightmares, avoidance, and a persistent sense of threat. But it often goes further. Many people also experience deep disturbances in emotional regulation, self-esteem, trust, and relationships. They may feel chronically ashamed, defeated, unreal, or unable to settle into a stable sense of self.

This is one reason complex PTSD is so often misunderstood. Some people are told they are simply anxious or depressed. Others are given labels that capture parts of the picture but not the whole. In many cases, what has been missed is the enduring impact of repeated trauma on the whole organisation of the personality and nervous system.

Common Signs of Complex PTSD

Complex PTSD can look different from person to person, but common features include:

• feeling chronically on edge, unsafe, or hypervigilant
• flashbacks, nightmares, intrusive memories, or body-based trauma responses
• emotional overwhelm, panic, or sudden states of shutdown
• dissociation, numbness, depersonalisation, or derealisation
• persistent shame, guilt, self-blame, or a deeply negative sense of self
• difficulty trusting other people or feeling safe in relationships
• feeling drawn into repeated unhealthy or chaotic relational patterns
• problems with emotional regulation, boundaries, or stability in daily life
• a sense of being damaged, broken, or cut off from ordinary life

Many people with complex PTSD have lived for years without realising that these patterns may be trauma-related. They may simply think they are too sensitive, too much, too difficult, or too damaged. Often, the opposite is true: the symptoms make sense when seen as adaptations to prolonged danger.

How Complex PTSD Differs from PTSD

PTSD is often associated with a specific traumatic event or a series of frightening events that remain psychologically unprocessed. Complex PTSD includes those trauma symptoms, but usually also involves more pervasive difficulties with self-organisation. This can affect emotional regulation, identity, self-worth, and relationships.

In clinical practice, people with complex PTSD often describe not only fear, but fragmentation. They may feel that trauma has altered who they are, how they attach, and what it feels like to exist in their own mind and body. That is why treatment for complex PTSD often needs to be broader, deeper, and more carefully paced than treatment for straightforward single-event trauma.

What Causes Complex PTSD?

Complex PTSD is often associated with trauma that is repeated, inescapable, and relational. Common backgrounds include:

• childhood emotional, physical, or sexual abuse
• childhood neglect or chronic invalidation
• domestic abuse or coercive control
• rape, sexual assault, or repeated sexual trauma
• bullying, humiliation, or prolonged emotional abuse
• trafficking, captivity, or exploitative relationships
• growing up with instability, terror, or attachment disruption

Trauma of this kind often affects more than memory. It can shape the entire emotional landscape of a person’s life: how they relate, what they expect from others, what they believe about themselves, and how quickly their nervous system moves into fear, collapse, or disconnection.

Assessment for Complex PTSD

I offer specialist complex PTSD assessment for adults who want diagnostic clarity, a deeper psychological formulation, treatment recommendations, or a written report where appropriate. Good assessment is not about ticking off symptoms in isolation. It involves understanding the whole pattern: trauma history, attachment history, dissociation, emotional regulation, current functioning, and the wider psychological structure of the difficulties.

Depending on the referral question, an assessment may include:

• a detailed clinical interview
• careful exploration of developmental and trauma history
• assessment of PTSD and complex PTSD symptoms
• consideration of dissociation, depression, anxiety, and overlapping presentations
• psychometric measures where clinically appropriate
• verbal feedback and, where agreed in advance, a written summary or fuller report

This can be especially helpful if you have previously received diagnoses that did not feel quite right, or if you are unsure whether your difficulties are best understood in terms of trauma, dissociation, personality dynamics, neurodivergence, or a mixture of several factors.

Therapy for Complex PTSD

Treatment for complex PTSD is rarely just about reducing a few symptoms. It often involves helping the person develop greater safety in the body, more stability in relationships, a more coherent sense of self, and a less punitive inner world. In many cases, it also involves helping the nervous system learn that the danger is over, even when part of the person still feels it is ongoing.

My approach to complex PTSD is both trauma-informed and depth-oriented. I work psychodynamically and relationally, and I also integrate trauma-focused approaches such as EMDR where appropriate. Depending on the person, treatment may involve stabilisation, grounding, careful work with dissociation, trauma processing, and deeper relational work around shame, attachment, and self-experience.

I do not believe in forcing trauma work too quickly. With complex PTSD, pacing matters. Some people need time to build safety and internal stability before deeper processing begins. Others are ready for more focused trauma work earlier. Treatment should fit the person, not the other way around.

C-PTSD and Dissociation

Many people with complex PTSD also experience dissociation. This may include emotional numbness, memory gaps, depersonalisation, derealisation, a sense of going blank under stress, or a more pervasive feeling of being cut off from life. Dissociation is often one of the least understood aspects of complex trauma, yet it can be central to the person’s distress.

If this is relevant to your presentation, I can also assess and treat trauma-related dissociation as part of a broader complex PTSD formulation. You can read more on my Dissociation Assessment page.

Why Work with Dr Comfort Shields?

I am a Chartered Clinical Psychologist based in the Harley Street Medical District in London, and I specialise in trauma, complex PTSD, dissociation, and psychologically complex adult presentations. My work combines clinical rigour with depth, warmth, and serious attention to the meaning and structure of symptoms.

I have particular expertise in working with:

• complex trauma and developmental trauma
• sexual abuse and assault trauma
• dissociation and trauma-related shutdown
• attachment trauma and relational difficulty
• expats and internationally mobile professionals
• high-functioning adults whose suffering is often underestimated

For many clients, one of the most important aspects of treatment is finally feeling that the full reality of what they have lived through is being understood, rather than reduced to a surface label.

Frequently Asked Questions About Complex PTSD

What is the difference between PTSD and complex PTSD?

PTSD typically involves trauma symptoms such as flashbacks, nightmares, avoidance, and hypervigilance. Complex PTSD includes those symptoms, but also often involves deeper and more persistent difficulties with emotional regulation, shame, self-worth, trust, and relationships.

Can complex PTSD come from childhood trauma?

Yes. Childhood abuse, neglect, chronic invalidation, and prolonged attachment trauma are among the most common backgrounds associated with complex PTSD.

Can complex PTSD be mistaken for other conditions?

Yes. It is sometimes confused with depression, anxiety, personality disorder, dissociation, burnout, or neurodivergence-related difficulties. This is one reason thoughtful assessment matters.

Can EMDR help with complex PTSD?

Yes, EMDR can be very helpful for complex PTSD, but it often needs to be more carefully paced and integrated into a broader treatment plan than in single-event trauma. You can read more on my EMDR page.

Do you offer complex PTSD therapy online?

Yes. I offer therapy and assessment for complex PTSD both in person in central London and online, depending on suitability and clinical need.

Book a Complex PTSD Consultation

If you are looking for complex PTSD therapy or assessment in London or online, you are welcome to get in touch. I offer specialist support for trauma, dissociation, developmental trauma, and long-term post-traumatic symptoms, with care tailored to the depth and complexity of the individual person.

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