Trauma refers to any experience that overwhelms your ability to cope, whether that’s a single event or something that builds up over time. It can follow an accident, loss, abuse, violence, or a period of sustained stress. It can also develop indirectly, through witnessing something distressing or supporting someone who has been through it.

When trauma responses persist and begin to interfere with daily life, they may meet the criteria for Post-Traumatic Stress Disorder (PTSD). PTSD is a recognised mental health condition, not a sign of weakness or a failure to cope. It reflects a nervous system that has stayed in a protective state long after the threat has passed. In Australia, around 12 in every 100 people will experience PTSD at some point in their lives. Many more live with the effects of trauma without ever receiving a formal diagnosis.

Trauma and PTSD don’t follow a set pattern. Some people feel constantly on edge, hypervigilant, or unable to relax even in familiar settings. Others feel numb, disconnected, or emotionally flat. Many people move between both.

You might notice:

• Difficulty sleeping, or vivid and distressing nightmares
• A heightened startle response, or feeling alert even when nothing is wrong
• Intrusive memories, flashbacks, or thoughts you can’t switch off
• Anxiety, irritability, or a tight feeling in your chest
• Numbness, emotional shutdown, or a sense of disconnection from yourself or others
• Withdrawing from people or situations you once felt comfortable in

These responses are not signs of weakness. They reflect the way your nervous system has adapted to something overwhelming or threatening.

Population statistics and general information about PTSD are informed by Healthdirect Australia.