Imagine going to your GP for the fifth time in two years with the same complaint – exhaustion that sleep doesn’t fix, a stomach that never quite settles, or a persistent tightness across your chest and shoulders. Every test comes back normal. Every specialist reassures you there’s nothing physically wrong. And yet your body keeps insisting otherwise. For many people, this is a message from the nervous system – one that often traces back to unresolved trauma that has left a lasting imprint on the body.

Importantly, unresolved trauma doesn’t always announce itself with flashbacks or nightmares. Sometimes, it speaks through the body – through chronic pain, fatigue, digestive problems, and a nervous system that simply cannot find its way back to calm. This blog explores why that happens, how to recognise the signs, and what genuinely helps.

Why Does Psychological Trauma Live in the Body?

When we experience something overwhelming – whether a single traumatic event or a prolonged period of stress, threat, or emotional pain – our nervous system responds the way it is designed to. It mobilises. Adrenaline surges. Muscles brace. Attention sharpens. As a result, the body prepares to fight, flee, or freeze.

This response is brilliantly adaptive in the short term. However, the problem arises when the threat passes but the body’s alarm system doesn’t get the all-clear signal. The physiological activation that was meant to be temporary becomes a default setting.

Trauma researcher Bessel van der Kolk spent decades documenting this phenomenon. His central finding: traumatic experiences are not stored the way ordinary memories are. Rather than being filed away as a coherent narrative of something that happened in the past, trauma is encoded in the body as sensation, tension, and arousal. The nervous system continues to respond as though the danger is ongoing – even years later, even when conscious memory has moved on.

Neuroscientist Stephen Porges’ Polyvagal Theory helps explain the mechanism. The vagus nerve – a long, branching nerve connecting the brain to the heart, lungs, and digestive system – plays a central role in regulating our sense of safety. Under normal circumstances, it acts like a brake on the stress response, helping us settle after a difficult experience. But when unresolved trauma keeps the system in a state of chronic alert, that brake can malfunction. Consequently, the body gets stuck cycling between hyperarousal (anxiety, tension, hypervigilance) and shutdown (fatigue, numbness, disconnection) – sometimes within the same day.

Key insight: Trauma is not just a psychological wound. It is a physiological imprint – one that shapes how we breathe, move, digest, and rest.

Recognising Unresolved Trauma Symptoms in the Body

One of the most disorienting aspects of unresolved trauma symptoms is how disconnected they can seem from any emotional experience. A person may have little conscious awareness of carrying trauma – particularly if the experiences occurred in childhood, during preverbal development, or if nobody ever acknowledged them as traumatic at the time.

Yet the body keeps a different kind of record. Below are some of the most common ways unresolved trauma manifests physically.

Chronic fatigue and disrupted sleep

Trauma is physiologically exhausting. A nervous system running in a near-constant state of alert depletes the body’s resources over time. As a result, many people describe a heaviness or flatness that sleep doesn’t restore – not because something is wrong with their sleep patterns, but because the underlying alarm hasn’t switched off.

Persistent muscle tension and pain

The body braces for threat. When that bracing becomes habitual – held in the jaw, the shoulders, the lower back, the chest – it produces chronic pain that has no identifiable structural cause. This is not imagined pain; the tension is real and the discomfort is real. The origin is simply not where medicine has been looking.

Digestive problems

The gut has its own complex nervous system – sometimes called the ‘second brain’ – and it responds exquisitely to stress. For example, conditions like irritable bowel syndrome, chronic bloating, nausea, and reflux appear significantly more often in people with a trauma history. Because the vagus nerve runs directly through the digestive system, nervous system dysregulation affects gut function directly and predictably.

Headaches and migraines

People with unresolved trauma frequently report chronic tension headaches and migraines. These link both to sustained muscle tension in the neck and shoulders, and to the neurological effects of prolonged stress on the brain’s pain-processing systems.

Immune system vulnerability

Sustained activation of the stress response suppresses immune function over time. Consequently, people with significant trauma histories often find they fall ill more easily, take longer to recover, or notice that physical symptoms flare during emotionally demanding periods.

Breathlessness and chest tightness

Shallow, restricted breathing is a hallmark of a nervous system in threat mode. Many people with unresolved trauma breathe primarily into the upper chest, never fully accessing the lower, slower breath that signals safety to the body. Over time, this pattern contributes to a chronic sense of tightness or constriction – even at rest.

unresolved trauma

‘But I Don’t Feel Traumatised’ – Why You Might Not Make the Connection

This question sits at the heart of what many readers most want to know: how do I know whether my physical symptoms are actually linked to psychological trauma?

The honest answer is that the connection is rarely obvious – and that’s not a personal failing. Rather, it reflects something important about how trauma is stored and processed.

Firstly, ‘trauma’ does not require a single catastrophic event. Relational wounding – growing up in an environment of emotional unavailability, chronic criticism, unpredictability, or neglect – can produce the same physiological effects as a discrete traumatic incident. In other words, the body doesn’t distinguish between a car accident and years of walking on eggshells.

Secondly, the mind and body often disconnect after trauma as a form of self-protection. Dissociation – the sense of being cut off from one’s own physical experience – is a common response to overwhelming stress. Because of this, people may genuinely not feel distressed while still carrying significant physiological activation.

Furthermore, research from the landmark Adverse Childhood Experiences (ACE) Study – one of the largest investigations of its kind – found a powerful dose-response relationship between early adversity and adult physical health outcomes. Specifically, adults who experienced four or more adverse childhood events faced dramatically elevated risks of a wide range of health conditions, including autoimmune disorders, heart disease, and chronic pain syndromes. The body, it turns out, keeps a very long account.

A useful question to ask yourself: Do your physical symptoms seem to flare during periods of emotional stress, conflict, or when something reminds you of a difficult past experience? If so, the mind-body connection may be worth exploring.

What Actually Helps: Treating Unresolved Trauma at Its Source

If trauma lives in the body, then the most effective approaches to healing need to engage the body – not just the thinking mind. This insight has driven one of the most significant shifts in trauma treatment over the past two decades.

Traditional talk therapy alone, while valuable, has limitations when physical symptoms are prominent. Insight into what happened is useful, but it doesn’t automatically reset a nervous system that has learned to treat the world as unsafe. Therefore, effective trauma-informed treatment needs to address both dimensions.

unresolved trauma symptoms

Trauma-focused therapies with strong evidence

Eye Movement Desensitisation and Reprocessing (EMDR)

EMDR is now recommended as a first-line treatment for trauma by the World Health Organization, the UK’s National Institute for Health and Care Excellence (NICE), and numerous other international bodies. Research also demonstrates that EMDR provides meaningful relief from somatic complaints, not only psychological symptoms. It works by helping the brain reprocess traumatic memories so they are stored differently – as something that happened, rather than something still happening.

Trauma-focused Cognitive Behavioural Therapy (CBT)

CBT helps people identify and shift the thought patterns, beliefs, and behavioural responses that keep the trauma response activated. It has a strong evidence base and works well alongside approaches that directly target physical symptoms.

Schema Therapy

Schema therapy can be valuable for people whose trauma is relational in origin – particularly those whose early experiences shaped deeply held beliefs about themselves and others that continue to drive emotional and physical distress.

Psychodynamic Therapy

Psychodynamic Therapy explores how unconscious patterns, early relational experiences, and unprocessed emotional material shape present-day functioning. For people whose trauma has never been named or consciously connected to their current difficulties, a psychodynamic approach can be especially powerful – bringing into awareness the deeper emotional currents that drive symptoms, and creating space for genuine integration over time.

Acceptance and Commitment Therapy (ACT)

ACT can work particularly well for people whose unresolved trauma symptoms include chronic pain or physical illness, offering frameworks for relating to suffering differently and rebuilding a meaningful life alongside difficult sensations.

The role of the therapeutic relationship

Perhaps the most consistent finding across trauma research is that the quality of the therapeutic relationship matters enormously. For many people whose trauma occurred in relationships – and most trauma does – being genuinely seen, believed, and supported by a clinician is itself part of the healing. As a result, finding a psychologist who is warm, skilled, and trauma-informed is a clinical necessity.

Day-to-day nervous system support

Formal therapy works best when supported by regular nervous system regulation in daily life. For instance, slow diaphragmatic breathing (extending the exhale) activates the vagus nerve and shifts the body out of threat mode. Similarly, gentle movement – particularly yoga, walking, and swimming – supports trauma recovery in ways that cognitively focused activities do not. In addition, predictable routines, safe social connection, and reducing unnecessary physiological stressors (such as poor sleep and excessive caffeine) all help the nervous system return to baseline.

psychological trauma

You Don’t Have to Keep Carrying Psychological Trauma

If you’ve spent years managing unexplained physical symptoms, cycling through medical appointments without answers, or quietly wondering whether something is fundamentally wrong with you – please know that this experience is far more common than most people realise. Moreover, it is not a reflection of weakness or imagination.

Unresolved trauma symptoms represent the body’s best attempt to protect you based on what it learned in the past. They are not a character flaw. They are not permanent. And with the right support, they can change.

Recovery from psychological trauma doesn’t require you to relive everything, or to spend years excavating the past. Instead, it requires a skilled, compassionate clinician who understands the mind-body connection, a therapeutic approach matched to your needs, and – most importantly – the willingness to begin.

At MyLife Psychologists, our team works with adults and adolescents navigating the effects of trauma, including the physical and somatic dimensions that mainstream medicine so often misses. We offer trauma-informed approaches at our Sydney clinic and via telehealth, tailored to each person’s history, presentation, and goals.

Ready to Take the Next Step?

If you’re wondering whether what you’re experiencing might be connected to unresolved trauma – or you simply want to talk through your options with someone who understands – we’d love to hear from you.

Book a free 15-minute call with our Care Coordinator to find out how MyLife Psychologists can support you. There’s no obligation – just a conversation to help you figure out the right next step.

References

  • van der Kolk, B. A. (2014). The Body Keeps the Score: Brain, Mind, and Body in the Healing of Trauma. Viking.
  • Porges, S. W. (1995). Orienting in a defensive world: Mammalian modifications of our evolutionary heritage. A polyvagal theory. Psychophysiology, 32(4), 301-318.
  • Levine, P. A. (1997). Waking the Tiger: Healing Trauma. North Atlantic Books.
  • Felitti, V. J., et al. (1998). Relationship of childhood abuse and household dysfunction to many of the leading causes of death in adults: The Adverse Childhood Experiences (ACE) Study. American Journal of Preventive Medicine, 14(4), 245-258.
  • Hughes, K., et al. (2017). The effect of multiple adverse childhood experiences on health: A systematic review and meta-analysis. The Lancet Public Health, 2(8), e356-e366.
  • de Jongh, A., et al. (2024). State of the science: Eye movement desensitization and reprocessing (EMDR) therapy. Journal of Traumatic Stress, 37, 205-216.
  • Shapiro, F., & Maxfield, L. (2002). The role of EMDR in medicine: Addressing the psychological and physical symptoms stemming from adverse life experiences. The Permanente Journal.
  • Chouker, A. (Ed.). (2020). Somatic manifestation of distress: Clinical medicine, psychological, and public health perspectives. NIH/PMC.

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Disclaimer: This article is for general informational purposes only and is not a substitute for individual psychological advice, assessment, or treatment. Reading this content does not establish a therapeutic relationship. If you have concerns about your mental health, please seek support from a registered health professional.