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Understanding Trauma: How Past Experience Shapes the Present


By Steven Mahan-Taylor 6 min read
Contents

Many people who are living with the effects of trauma do not identify what they are carrying as trauma. They describe something that has made them different, a way of responding that they cannot quite account for, a sense that certain situations or relationships bring with them a weight that feels disproportionate to the moment. The word trauma, when it does come up, can feel like it belongs to something more extreme than their own experience.

That gap between experience and label is one of the most significant barriers to people seeking the right support. This guide aims to close it a little.

What is trauma?

Trauma is not defined by the severity of an event but by the impact it has. Two people can experience the same situation and be affected by it in very different ways. What matters clinically is not whether something ‘objectively’ qualifies as traumatic, but whether it has left a lasting mark on how a person functions, how they relate to others, and how safe they feel in the world.

At its core, trauma is the result of an experience, or a pattern of experiences, that overwhelms the mind’s capacity to process and integrate what has happened. The ordinary systems that help people make sense of their lives, regulate their emotions, and feel connected to others get disrupted. Sometimes the disruption is temporary. Sometimes it persists for years, quietly shaping perception and behaviour in ways that are difficult to trace back to a source.

Single incident trauma and complex trauma

A useful distinction in understanding trauma is between events that are time-limited and those that are sustained. A single incident, an accident, a bereavement, a medical emergency, or an assault, can be deeply traumatic even when it involves no ongoing threat. The shock of what happened, and the body’s response to it, can leave a person feeling unsafe in ways that outlast the incident by months or years.

Complex trauma is different in character. It tends to develop when trauma is repeated, prolonged, or occurs in the context of a close relationship, particularly during childhood. Experiences of emotional neglect, inconsistent or frightening caregiving, persistent abuse, or growing up in an environment of chronic unpredictability all fall within this territory. Because complex trauma shapes development rather than disrupting an already-formed sense of self, its effects tend to be more pervasive and more deeply embedded in how a person relates to themselves and to others.

Both are real. Neither is more valid than the other. The distinction matters mainly because they tend to call for different therapeutic approaches.

How does trauma show up in daily life?

Trauma does not always present as flashbacks or visible distress. More often, its presence is felt in subtler ways: a hypervigilance that makes it hard to relax even in safe environments, a tendency to disconnect from emotional experience under pressure, difficulty trusting other people, or a persistent low-grade sense that something is wrong without being able to say what. Relationships often bear the mark of it most clearly, in patterns of closeness and distance, in how conflict is managed, in whether intimacy feels safe.

Sleep is frequently affected, and so is the capacity to stay present. Some people describe a sense of their body still being in a past moment long after the rational mind has moved on. Others find that certain triggers, a sound, a smell, a tone of voice, bring an intensity of response that feels out of proportion but is entirely beyond conscious control. These are not signs of weakness or overreaction. They are the nervous system doing what it learned to do in circumstances that required it.

Why is trauma often hard to recognise?

Part of the difficulty is that the effects of trauma are frequently attributed to other things. A person may understand themselves as anxious, or avoidant, or prone to low mood, without ever connecting those patterns to an earlier experience. The connection is not always obvious, particularly when the trauma is complex and occurred in childhood, during a period before memory is reliable or before a child had the language to make sense of what was happening.

There is also the question of comparison. People who have experienced trauma often minimise it in relation to what others have been through. The belief that what happened to them was not bad enough to count keeps many people from recognising their experience as trauma and seeking the support that would actually help.

What kind of support tends to help?

Not all therapeutic approaches are equally suited to trauma, and the right fit depends significantly on the nature of the trauma and how it is presenting. For single incident trauma, approaches such as Cognitive Behavioural Therapy (CBT) can be effective, particularly trauma-focused adaptations designed to help process what happened without re-traumatising. For complex or developmental trauma, longer-term work tends to be more appropriate, addressing the deeper patterns of self-perception and relating that have formed around the experience.

Schema Therapy is one of the approaches most frequently used with complex trauma, given its focus on the underlying beliefs and unmet early needs that tend to sit at the root of more pervasive trauma presentations. The therapeutic relationship itself plays a central role in this kind of work, providing a consistent and responsive experience that many people with complex trauma histories have not previously had. 

Eye Movement Desensitive and Reprocessing (EMDR) therapy is also a highly specialist approach for those who have experienced trauma. EMDR combines elements of CBT and bilateral processing to support clients in processing their traumatic memories. It is particularly effective for those who have experienced Post Traumatic Stress Disorder (add hyperlink).

At London Bridge Therapy, trauma work is carried out by qualified Clinical and Counselling Psychologists and Expert Integrative Psychotherapists with relevant specialist training. The initial assessment is designed to identify what kind of trauma is present and what therapeutic approach is most likely to be useful, before any commitment to ongoing work.

If you would like to understand more about how trauma therapy might be relevant for you, get in touch to arrange an initial consultation.