What is CPTSD - and how is it different to PTSD?

If you've recently been told you have complex PTSD, or CPTSD, you might be sitting with a lot of questions. What does it actually mean? How is it different to PTSD? And why have you only just heard this term when you've probably been struggling for years?

This post is an attempt to answer those questions plainly — not with a clinical checklist, but in a way that might actually help things make sense.

PTSD and CPTSD — what's the difference?

PTSD, or post-traumatic stress disorder, typically develops after a specific traumatic event — a serious accident, an assault, a natural disaster. The hallmark symptoms are things like flashbacks, nightmares, hypervigilance, and avoidance of reminders of what happened. The nervous system gets stuck in a kind of loop, responding as if the threat is still present even when it's long over.

CPTSD shares a lot of those features, but it tends to develop from trauma that was repeated or prolonged rather than a single event. Things like growing up in an unpredictable or unsafe environment, being in an abusive relationship over a long period of time, or experiencing chronic neglect or emotional unavailability from caregivers.

It's worth saying clearly: CPTSD doesn't only develop in childhood. It can develop in adulthood too, from domestic violence, prolonged threat, or any situation where you were exposed to something overwhelming over a sustained period without safety or support.

What makes CPTSD distinct is the additional layer of impact it has on how you see yourself, how you relate to others, and how you experience your own emotions. Alongside the more recognised trauma symptoms, people with CPTSD often experience things like deep shame, a persistent inner critic, difficulty trusting people, problems with emotional regulation, and a sense of not really knowing who they are outside of survival mode.

Why it's often missed

One of the most common things I hear from people coming into therapy is that they've spent years being told they have anxiety, depression, borderline personality disorder, or a combination of things, and that none of those labels quite explained how things actually felt.

That's because when CPTSD isn't recognised, it can look like a lot of separate problems. The emotional dysregulation gets labelled one thing, the relationship difficulties another, the low mood another. Nobody stepped back to look at the whole picture and ask what you'd actually been through.

CPTSD isn't yet formally recognised in all diagnostic systems, which is part of why it gets missed. But for a lot of people, it's the first framework that actually makes their experience make sense.

What's actually happening

When you grow up in, or spend a significant period of time in, an environment where safety is unpredictable, your nervous system has to adapt. You work out what keeps people around, what reduces conflict, what makes things feel less dangerous. Those adaptations become your ways of moving through the world.

The difficulty is that those patterns don't automatically update when your circumstances change. The part of you that developed them still believes they're needed, and it's still running them, often without you realising. That's why you might find yourself responding in ways that feel out of proportion to what's actually happening, or repeating patterns in relationships that you can see clearly but can't seem to shift.

That isn't a character flaw or a lack of effort. It's your system doing exactly what it learnt to do.

What CPTSD therapy looks like

Therapy for CPTSD works differently to standard talking therapy, and if you've tried therapy before and found it didn't quite reach the problem, that's probably why.

The work isn't about going straight into what happened. It starts with making sense of your patterns together - understanding what they were protecting, where they came from, and what a younger part of you needed and didn't get. That understanding matters, but it's not enough on its own.

Real change in CPTSD tends to happen when we can work directly with the memories and emotional learnings that are keeping those patterns in place - updating them at the root rather than just managing the symptoms at the surface. That's slower, more relational work, and it needs to happen at a pace your nervous system can actually tolerate.

It also needs the right kind of relationship. Because CPTSD is relational in its origins, the therapeutic relationship itself becomes part of how healing happens - not just the place where the work takes place, but part of the mechanism.

If this resonates

If you've recognised yourself in any of this, whether you have a formal diagnosis or not, it might be worth exploring whether trauma-specific therapy could help.

You don't have to have it all figured out before you reach out. A free 15-minute consultation is a simple space to ask questions, get a sense of how I work, and work out whether this feels like the right fit.