More than 1 in 10 Australians will suffer from PTSD, and more than half of those people will also have clinical depression.

For those living with PTSD, every day can feel stuck. Often there’s a feeling that the nervous system is on permanent high alert. This might manifest as hypervigilance and a feeling of threat when there isn’t one. For some people, flashbacks to traumatic scenes or memories are a feature that haunts their day-to-day life.

With new treatments and a better awareness of how the brain can change, today we understand more about what recovery from PTSD involves, and how patients can get back to living without the burden of fear.

Do I have PTSD?

PTSD stands for post-traumatic stress disorder. It refers to a cluster of symptoms that happen to people who have experienced trauma.

These symptoms can include:

•       Re-experiencing: This includes memories, nightmares, or flashbacks that arrive unexpectedly and can feel like re-living the original trauma.
•       Avoidance: The mind tries to protect you by avoiding anything that might trigger a memory. Certain places, people, conversations, or even thoughts get slowly blocked off.
•       Hyperarousal: The nervous system stays on high alert, even when there is no danger present. This makes sleep difficult, concentration hard, and small things feel threatening.
•       Negative cognition: Living with PTSD often leads to a slow but persistent shift in how someone feels about the world and about themselves. This can be linked to a sense of shame, guilt, disconnection or numbness.
•       Low mood and depression: All of these symptoms are heavy to carry. There may be a sense that things will never be okay again. Over time, this can have a big impact on mood.

Is PTSD the same as anxiety?

PTSD used to be classified as an anxiety disorder. However, as we have learned more about the brain, PTSD has shifted into its own category of “trauma and stressor-related disorders.”

The core distinction is how the condition develops. PTSD develops in response to a specific traumatic event or series of events. Anxiety, on the other hand, is often generated without a precipitating situation.

Additionally, PTSD has many symptoms and emotions beyond anxiety alone — including shame, anger, and grief. Generalised anxiety tends not to involve flashbacks and nightmares.

There is some overlap — both conditions affect sleep, energy, and mood, and both create the sense of needing to be constantly on guard. Moreover, both conditions can be helped with new treatments that target neuroplastic changes in the brain.

What PTSD does to the brain

PTSD doesn’t just change how someone feels — it changes how parts of the brain behave and communicate. Trauma can make the brain’s fear‑response systems more reactive, memory centres less efficient, and the “thinking” parts less able to calm down those emotional reactions. These changes explain why PTSD feels so persistent: the brain gets stuck in patterns that keep people living in survival mode, even when danger has long passed.

The amygdala: A threat alarm that doesn’t switch off

The amygdala is designed to spot danger and activate fear responses, which is essential for survival. In PTSD, this alarm stays overly sensitive and reactive, often treating safe situations as if they are dangerous.

The prefrontal cortex: Why logical thinking goes offline under perceived threat

The prefrontal cortex is the part of the brain involved in reasoning, decision‑making and emotional regulation. In a healthy brain, the prefrontal cortex calms the amygdala and makes sense of stressful situations. But in individuals with PTSD, this region often becomes less active or less effective at doing that job. This results in difficulty controlling emotions, thinking clearly under stress, or shifting out of survival mode.

The hippocampus: Why trauma memories feel immediate rather than past

The hippocampus organises and stores memories, as well as distinguishing between past events and the present moment. In PTSD, this region often shows reduced activity or changes in structure, which can lead to intrusive memories and flashbacks that feel as if they are happening now. When the hippocampus isn’t functioning normally, the brain struggles to contextualise trauma memories. As a result, reminders can trigger intense emotional responses even when there’s no real danger.

The stress response system — chronic cortisol and what it costs the brain over time

In brief situations, the cortisol response helps the body cope. However, when stress and fear signals persist, cortisol remains high for too long. Prolonged exposure to stress hormones affect brain regions like the hippocampus and prefrontal cortex, undermining memory, emotional regulation and overall resilience. Over time, this chronic stress pattern reinforces the brain’s fear circuits, making recovery harder without support.

Neuroplasticity: The brain’s capacity to change and why PTSD suppresses it

Neuroplasticity is the brain’s ability to reorganise its connections and form new pathways in response to experience. Essentially, this is the way the brain updates its internal “maps” based on what we go through. It’s the same process that helps us learn new skills, recover from injury, or build new habits by strengthening some connections and pruning others.

Chronic stress and trauma, like what happens in PTSD, can interfere with this process by reducing important growth factors such as brain‑derived neurotrophic factor (BDNF), which supports the survival of neurons involved in learning and memory. Over time, this suppression makes it harder for the brain to rewire away from fear and danger responses, meaning it can be tougher to fully benefit from therapies that rely on learning new ways of thinking.

Why some people don’t respond to standard treatments

Even though treatments like trauma‑focused cognitive behavioural therapy (TF‑CBT) and EMDR are evidence‑based and help many people with PTSD by targeting traumatic memories and fear responses, they don’t work for everyone. These therapies are designed to help the brain learn new ways of processing fear and reducing avoidance, but complex or prolonged trauma, comorbid mental health conditions, or biological differences in brain networks can make standard approaches less effective for some people.

Medications (typically SSRIs) play a role too, especially for reducing intrusive and hyperarousal symptoms, but they don’t fully resolve trauma responses in many cases. What clinicians often describe as “treatment‑resistant PTSD” isn’t a personal failing, but simply a clinical reality where symptoms persist despite appropriate therapy or medication. It signals that the usual approaches haven’t been enough, and a different or more personalised strategy may be needed.

One hypothesis gaining attention is that underlying limitations in neuroplasticity can restrict how well standard treatments take hold; if the brain is stuck in entrenched fear patterns, approaches that also help restore that learning capacity may be needed before deeper change can occur.

Newer treatment approaches targeting neuroplasticity directly

In recent years, researchers have begun exploring treatment options that go beyond traditional antidepressants and therapy by directly engaging neuroplasticity. Unlike older medications that mainly influence serotonin or noradrenaline, many of these newer approaches work through glutamate pathways and related signalling systems, which are closely tied to growth factors like BDNF that support synapse formation and neural regrowth.

These treatments are administered in controlled clinical settings with careful monitoring. The environment and therapeutic support are part of how they may help the brain form new, less fear‑driven connections.

Speak to Goodmind

If you’ve tried standard treatments for PTSD without adequate relief, it may be worth speaking with your psychiatrist about what specialist options exist — or reaching out to our compassionate, experienced team at Goodmind.

Frequently asked questions about PTSD

Can PTSD cause permanent changes to the brain?

PTSD is associated with real changes in how certain brain regions work, especially areas involved in fear responses, memory and emotional regulation. A more reactive amygdala (a threat‑processing region) and changes in memory‑related areas like the hippocampus are common in people with persistent PTSD symptoms. These changes don’t necessarily mean damage in a fixed sense, but rather that neural activity and connectivity are altered in ways that can make symptoms persistent without treatment. The good news is that the brain remains adaptable, and many evidence‑based therapies aim to support more adaptive patterns over time.

What does neuroplasticity mean for PTSD recovery?

Neuroplasticity refers to the brain’s ability to form new connections and reorganise itself based on experience and learning. In the context of PTSD, neuroplasticity underpins how treatments like trauma‑focused therapy help the brain learn new ways of responding to trauma reminders. Because PTSD can suppress some of these learning processes, fostering neuroplasticity through therapy, lifestyle habits, and supportive interventions is a central part of long‑term recovery, helping the brain shift away from entrenched threat‑focused patterns toward more regulated responses.

What is treatment-resistant PTSD?

Treatment‑resistant PTSD generally means that a person has tried recommended first‑line therapies like trauma‑focused psychological treatments and/or medications but continues to experience significant symptoms that interfere with daily life. It doesn’t mean recovery isn’t possible, but it does indicate that the usual approaches haven’t been enough on their own, and a different or more tailored plan may be needed.

Are there newer treatments for PTSD beyond CBT and medication?

Yes. Alongside established therapies like trauma‑focused CBT and EMDR, research and clinical practice are exploring a range of newer or adjunctive approaches. These include therapies that focus on emotion regulation skills, memory reconsolidation strategies, neurofeedback, and other neuroscience‑informed techniques developed in specialist settings.

What is a glutamate-pathway treatment for depression or PTSD?

Glutamate‑pathway treatments are a newer class of approaches that target glutamate — a key neurotransmitter involved in neural communication and plasticity. Unlike traditional antidepressants that mainly affect serotonin or noradrenaline, glutamate‑targeting treatments (for example, certain NMDA receptor modulators) can influence how neural circuits adapt and learn. This has attracted interest because it may help with symptoms faster and support recovery in ways that standard medications don’t. These treatments are administered in specialist clinical settings and guided by trained professionals.

How do I find a specialist PTSD service in Australia?

In Australia, you can start by talking to your GP or a mental health professional, who can help with an assessment and referrals to specialist services such as psychologists, psychiatrists or trauma clinics. There are dedicated PTSD and trauma treatment centres across states and territories that offer evidence‑informed care, and services like Open Arms (for veterans), state‑based mental health networks, and private specialist practices provide targeted support.