Understanding PTSD: When the Past Won’t Stay in the Past

7 Jan

Written By Sabrina Peters | Registered Psychologist

Post-Traumatic Stress Disorder (PTSD) is one of the most misunderstood mental health conditions. When most people hear the term, they picture soldiers returning from war. But PTSD can affect anyone who has lived through trauma. A life-threatening event. Abuse. A car accident. Medical trauma. Or even prolonged emotional distress that never quite got the chance to be processed.

For those who live with PTSD, the past doesn't stay in the past. It intrudes into daily life, often in the form of flashbacks, nightmares, or overwhelming anxiety. What happened then still feels like it's happening now, and that makes it incredibly difficult to feel safe, present, or in control.

"What happened then still feels like it's happening now, and that makes it incredibly difficult to feel safe, present, or in control."

But there is hope. PTSD is not a life sentence. With the right treatment, many people find healing, peace, and a real way forward. I've seen it happen in my therapy room, again and again. So let's talk through what PTSD actually is, why it works the way it does, and what genuine recovery looks like.

So what is PTSD?

PTSD is a psychological condition that develops in response to experiencing or witnessing a traumatic event. Not everyone who goes through trauma develops PTSD, and that's an important point. Two people can live through the same event and respond completely differently. It's not a weakness or a character flaw. It's about how the nervous system processed (or couldn't process) the experience at the time.

For some, the nervous system essentially gets stuck in survival mode, unable to properly file the memory away. That's where PTSD symptoms begin.

Symptoms of PTSD

PTSD symptoms generally fall into four categories. You don't need to have all of them to be struggling, and you don't need to have lived through a "big enough" trauma to qualify for support.

Intrusive thoughts and flashbacks

Recurrent, unwanted memories of the trauma
Nightmares
Flashbacks, where it feels as if the event is happening all over again
Intense distress when reminded of what happened

Avoidance and emotional numbing

Avoiding people, places, or conversations related to the trauma
Suppressing emotions, feeling disconnected or numb
Struggling to remember details of the event

Hyperarousal and reactivity

Feeling constantly on edge or hypervigilant
Difficulty sleeping
Irritability or sudden outbursts of anger
An exaggerated startle response

Negative changes in mood and thinking

Persistent feelings of guilt, shame, or self-blame
Difficulty experiencing joy
Loss of interest in things once enjoyed
Feeling hopeless about the future

The science behind PTSD

Here's something I want every person with PTSD to hear: this is not all in your head. Or rather, it is, but not in the way that phrase usually means. PTSD is a physiological response. Your body and brain are stuck in survival mode, and there are real, measurable changes happening at a neurological level.

"PTSD is not weakness. It's your nervous system doing exactly what it learned to do to keep you alive."

When a traumatic event happens, the brain's amygdala, which is the fear centre, goes into high alert and activates the fight, flight, or freeze response. Normally, the prefrontal cortex (the rational, thinking part of the brain) helps regulate the amygdala, allowing us to process the experience and move forward.

But in PTSD, the prefrontal cortex loses some of that regulating power, and the amygdala stays hyperactive. This is why people with PTSD often feel trapped in the past, even when they are safe in the present.

Brain imaging studies have confirmed these changes. People with PTSD typically show:

A hyperactive amygdala, making them more reactive to perceived threats
A weakened prefrontal cortex, reducing their ability to self-soothe
A smaller hippocampus, the part of the brain responsible for distinguishing between past and present

That last one is key. When the hippocampus isn't working at full capacity, your brain genuinely struggles to know that the trauma is over. The danger feels current. Which is why PTSD symptoms can persist for years after the event itself.

The linen cupboard metaphor

One of the ways I explain PTSD to my clients is through what I call the linen cupboard metaphor. Imagine your brain is a well-organised linen cupboard. When an ordinary event happens, your brain processes it, folds it neatly, and places it on the right shelf. Easy.

Trauma is different. Instead of being neatly folded and stored away, it gets shoved into the cupboard in a chaotic mess. Unprocessed. Tangled. Overflowing.

Now, every time you walk past that cupboard, the door flies open unexpectedly and everything spills out. The memories, emotions, and physical sensations of the trauma come flooding back, completely uninvited. A smell. A song. A tone of voice. Any little thing can swing that door open.

"Avoidance doesn't solve the problem. It just keeps everything jammed inside, waiting for the next moment to burst out."

People with PTSD spend an enormous amount of energy trying to force that cupboard door shut. Avoiding anything that might trigger what's inside. But avoidance doesn't resolve trauma. It only delays it. The goal of treatment is not to erase what happened. It's to help your brain finally process and fold those memories, so they can sit on a shelf instead of constantly tumbling out.

How PTSD is treated

There is no single path to healing from PTSD, but there are several evidence-based treatments that genuinely work. The right combination depends on the person, the trauma, and what feels manageable. A good clinician will walk that with you.

1. Trauma-Focused Cognitive Behavioural Therapy (TF-CBT)

TF-CBT helps reframe the negative thoughts that trauma leaves behind, gently reduces avoidance behaviours, and uses carefully paced exposure techniques to take the charge out of triggers. It also teaches practical coping skills for emotional regulation. It's one of the most well-researched treatments for PTSD.

2. Eye Movement Desensitisation and Reprocessing (EMDR)

EMDR uses bilateral stimulation (usually eye movements or tapping) to help the brain reprocess traumatic memories. Studies have shown it can significantly reduce PTSD symptoms, and one of its great strengths is that it doesn't require the detailed retelling of trauma. For many clients, that makes it far more tolerable.

3. Somatic and body-based approaches

Trauma is stored in the body, not just the mind. This is something the research has been catching up on for years now, particularly through the work of Bessel van der Kolk. Techniques like breathwork, yoga, grounding exercises, and trauma release exercises help regulate the nervous system and discharge stored tension. They're often a beautiful complement to traditional talk therapy.

4. Medication

Antidepressants, particularly SSRIs like sertraline and paroxetine, can help regulate mood and anxiety enough to make therapy more accessible. Medication is rarely a complete solution on its own, but combined with therapy, it can be a powerful support. Speak with your GP or psychiatrist about what might be right for you.

5. Faith, community, and connection

For many people, healing from trauma is not purely psychological. It's spiritual and relational too. Being seen and supported in safe community, engaging in prayer or worship, and being held by people who know your story can offer a depth of peace that complements clinical treatment beautifully.

Healing is not about forgetting what happened. It's about integrating it into your story in a way that no longer defines or controls you.

"You are not broken. You are not beyond repair. You are worthy of healing."

PTSD can make you feel trapped, but trauma does not have to define you. With the right support, the past can become just a memory, not a daily battle. It takes time. It takes courage. But it is possible to reach a place where what happened to you is part of your story, not your identity.

If you or someone you love is struggling, please reach out to a qualified mental health professional. You don't have to carry this alone, and you don't have to figure it out on your own. Step by step, healing is possible. And you are absolutely worth it.

About the Author

Sabrina is a registered psychologist, passionate about helping people build meaningful, emotionally healthy, and resilient lives. Her clinical expertise and genuine warmth bring both competence and compassion to the therapy room and the online space.

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