Understanding the link between trauma and generalised anxiety

Many come to therapy describing persistent worry, a sense of unease, or difficulty switching off, without fully understanding where these patterns come from. In this article, we explore how both overt and subtle forms of trauma can shape the nervous system, and outline how trauma therapy can help reduce generalised anxiety.

When we find ourselves in situations where we feel overwhelmed, powerless, or unable to cope, we can become dysregulated. Trauma is not defined solely by the event itself, but by how our nervous system responds when something feels too much to handle. These experiences can leave behind a lasting imprint, shaping how we perceive and respond to the world around us.

Trauma symptoms exist on a spectrum. At the milder end, someone might come away from a distressing experience with the thought “I’m not going to let that happen again”, often accompanied by avoidance (flight) behaviours. For example, after a car accident, a person may feel hesitant or anxious about getting back into a car.

At the more severe end, particularly when an experience involves a sense of threat to life and a complete lack of control, the nervous system in that situation can become totally overwhelmed. This overwhelm will then leave an echo that will be activated by ongoing situations that remind the person of the original trauma. This may also present as a kind of “hijacking,” where the person feels persistently on edge, dissociated, or troubled by intrusive thoughts and nightmares.

The impact of chronic stress and repeated trauma

I feel it is important to recognise that trauma does not only arise from single, dramatic events. It can develop gradually through repeated exposure to stress. When someone is under constant pressure, holding significant responsibilities, navigating ongoing challenges, and pushing themselves to perform, the nervous system may begin to register this stress as a sustained threat. Over time, this can lead to a growing sense of dread associated with everyday situations, such as going to work.

I saw this clearly during the COVID-19 pandemic. Many of the nurses I worked with reported being exposed to unsafe practices, moral injury, and repeated encounters with death. This was overwhelming and exhausting at a deep level. The result was often described as burnout, but really, what sat beneath that was a person under prolonged emotional strain. Many nurses felt it was their duty to just keep on going regardless. 

Why trauma can lead to generalised anxiety

When your nervous system has learned, through either acute trauma or chronic stress, that the world is unpredictable or unsafe, it can then remain in a state of heightened alertness. This state of hypervigilance means you are constantly scanning for potential threats. Over time, this vigilance can generalise, no longer attaching itself to one specific situation or trigger but spreading across many areas of life. The result is a pattern of ongoing worry. 

I feel it is useful to distinguish between what is sometimes referred to as “large T” and “small t” trauma. Large T trauma relates to more overt, often acute experiences, events where there is a clear sense of threat, danger, or helplessness. Small t trauma refers to the more subtle, cumulative experiences that may not appear traumatic on the surface, but nonetheless shape how safe a person feels in the world. Such as repeated work stress. 

Small ‘t’ traumas are often accumulated from early relationships. For example, when attachment needs such as safety, consistency, attunement, and emotional responsiveness are not reliably met in childhood, the developing nervous system can begin to organise itself around a sense of uncertainty. The child adapts as best they can, but may come to experience the world as unpredictable, or feel that they must stay alert in order to cope. Over time, this can lay the groundwork for a kind of persistent, generalised worry.

From this perspective, both large T, small t (and medium t) trauma contribute to the same feeling that the world is potentially unsafe. This can be understood through the lens of the threat, drive, and soothe systems. In individuals with a history of trauma, the threat system can become overactive, constantly scanning for danger, while the soothe system, which supports feelings of safety and contentment, may be less accessible. The drive system may become dominant with individuals pushing themselves to cope or perform.

How trauma therapy can help

If we understand generalised anxiety as a need to stay on high alert, then trauma therapy requires that we work through the beliefs held deeply within the threat system. It's a bit like an update, letting these frozen traumatised clusters of neurones understand that time has moved on and the threat is over. Approaches such as EMDR support this process, helping the brain reprocess distressing memories so they no longer activate the same embedded beliefs. As this happens, the nervous system begins to recognise that the old danger is no longer present.

For many people, especially those with early attachment disruptions, such as absent, chaotic or abusive parents, a heightened state of activation can feel like the norm. Therapy supports the development of regulation through the relational experience itself. Being in a consistent, attuned therapeutic relationship can offer a felt sense of safety in connection. Over time, this helps to strengthen the soothing system, allowing you to access states of calm more readily. 

Moving from survival to a sense of safety

Trauma often leaves behind underlying beliefs such as “I’m not safe,” ‘‘I’m not good enough”, “others aren’t reliable,” or “I have to manage everything on my own.” These beliefs drive the ongoing pattern of worry. As experiences are processed and the system becomes more regulated, there is space for new meanings to emerge. You begin to differentiate between past and present, and develop a more flexible, less threat-driven way of relating to both yourself and the world.

This work gradually reduces the need for constant vigilance. Rather than trying to eliminate worry directly, trauma therapy addresses the underlying adaptations that made that worry necessary in the first place. Worry is a protective mechanism. As you begin to feel safer, both internally and in relationships with others, generalised anxiety often begins to ease.

What we often label as anxiety is not a flaw or a weakness, but an intelligent response from a system that has learned to protect itself. When we approach it through the lens of trauma, we shift from trying to control symptoms to understanding their origins. From there, meaningful and lasting change becomes possible.