Understanding PTSD

For certain people, trauma has an ending. The accident is over. The abusive relationship has ended. The deployment finished. Childhood is long behind them. So, why do the memories, anxiety, and overwhelming emotional waves continue to surface?

This is one of the defining characteristics of Post-Traumatic Stress Disorder (PTSD). Although the traumatic event has ended, the brain and nervous system continue to respond as though the threat is still present or just around the corner.

PTSD is not a sign of weakness or an inability to “move on.” Instead, it is a well-recognized psychological condition that reflects just how profoundly trauma can impact us and alter the way the brain processes safety, memory, and perceived threat. In many ways, PTSD is less about the traumatic event itself and more about how the brain and body continue to respond long after it has ended.

PTSD is much more common than people realize. It can develop in response to a wide range of overwhelming or distressing experiences, not only those involving life-threatening events. That said, it can happen through directly experiencing a traumatic event, witnessing it, finding out that it affected someone close to you, or being repeatedly exposed to distressing details, which is common among first responders, healthcare professionals, and other helping professionals.

Traumatic experiences vary greatly in both their severity and nature. Some examples are:
- Childhood physical, emotional, or sexual abuse
- Intimate partner violence
- Sexual assault
- Serious vehicle accident
- Medical trauma
- Traumatic birth experience
- Military combat
- Natural disasters
- Sudden or traumatic loss of someone close to you

It is important to remember that not everyone who experiences a traumatic event develops PTSD. Recovery is often influenced by a number of factors, including previous life experiences, support (friends/family), genetics, coping strategies, and both the duration and severity of the traumatic event. Two people can experience the same event yet will respond to it very differently, and neither response is more or less valid than the other.

When survival mode doesn’t switch off

PTSD can be understood as the nervous system remaining in survival mode long after the danger has passed. When faced with a threat, the brain automatically activates our survival responses: fight, flight, freeze, or fawn, in an attempt to protect us. Under normal circumstances, these responses settle once the danger has passed. Meanwhile, with PTSD, the nervous system struggles to recognize that the threat is no longer present. As a result, it remains on high alert, constantly scanning for danger. Some seemingly harmless cues (e.g., smell, a tone of voice, a crowded place such as Costco, or even a certain time of year) can trigger intense emotional or physical reactions.

To break it down even further, a simple way to think about PTSD is like a smoke alarm that is overly sensitive. Rather than sounding the alarm only during a fire, it sounds every time someone burns toast. The alarm isn’t broken; it is trying to keep you safe.

There is so much more to PTSD than flashbacks. Other symptoms include:
- Intrusive memories or nightmares
- Avoiding people, places, conversations, or situations that remind them of the trauma
- Feelings of guilt, shame, fear, or emotional numbness
- Difficulty trusting others or feeling disconnected from loved ones
- Irritability, difficulty concentrating, sleep disturbances, or feeling constantly on edge

Take a moment to reflect on how these symptoms could influence nearly every aspect of a person’s life. When your nervous system is constantly scanning for danger, even routine interactions can become overwhelming. Trusting others feels difficult, maintaining close relationships can become exhausting, and work or school suddenly requires more energy than before. Activities that once brought joy start to feel draining or are avoided altogether. Over time, PTSD doesn’t just affect how someone remembers the past; it shapes how they experience the present. Recognizing this impact is an important first step towards understanding why recovery requires so much more than simply “moving on.”

To end on a positive note, recovery from PTSD is possible. PTSD is one of the most widely studied trauma-related conditions, and there are several well-established, evidence-based treatments available. Approaches such as Trauma-Focused Cognitive Behavioural Therapy (TF-CBT), Eye Movement Desensitization and Reprocessing (EMDR), and Cognitive Processing Therapy (CPT) have all been shown to help reduce symptoms, improve daily functioning and restore a greater sense of safety and control.

Treatment is not about erasing the past or pretending the trauma never happened. Rather, it's about helping the brain and nervous system notice that the danger is no longer present. Over time, traumatic memories become less emotionally overwhelming, triggers become more manageable, and individuals are better able to engage in the relationships, activities, and parts of life that mattered most to them from the beginning.

If there is one takeaway from this article, let it be this: PTSD is not a sign that someone is “stuck” or incapable of moving forward. With the right support, the brain and body can heal.

Sure, the past will always be part of your story, but it does not have to continue writing your future.