Nervous System Dysregulation

What Is the Autonomic Nervous System?

Your autonomic nervous system operates below conscious awareness, regulating functions like heart rate, breathing, digestion, and the stress response. It has two main branches:

• Sympathetic nervous system – activates the stress response (fight or flight). It speeds things up – heart rate, breathing, muscle tension, alertness.
• Parasympathetic nervous system – activates the rest response. It slows things down – calming the heart rate, relaxing muscles, supporting digestion and recovery.

In a regulated system, these two branches work together. When you face a challenge, the sympathetic system activates. When the challenge passes, the parasympathetic system brings you back to baseline. This is healthy and normal.

What Goes Wrong

In people who have experienced trauma, chronic stress, or prolonged periods of unsafety, the nervous system can become stuck:

• Stuck in hyperarousal (sympathetic dominance) – your system stays in fight-or-flight mode. You may experience anxiety, hypervigilance, difficulty sleeping, irritability, racing thoughts, muscle tension, and an inability to relax.

• Stuck in hypoarousal (dorsal vagal shutdown) – your system moves into a freeze or collapse state. You may experience numbness, disconnection, brain fog, fatigue, low motivation, depression, and a sense of being shut down or absent.

• Oscillating between both – your system swings between hyperarousal and shutdown, sometimes within hours or even minutes. This can feel chaotic and confusing.

How Dysregulation Affects Daily Life

Nervous system dysregulation is not just an abstract concept. It shows up in very practical ways:

• Difficulty sleeping or constant exhaustion
• Chronic pain, tension, or digestive problems
• Emotional reactivity – overreacting or shutting down
• Difficulty concentrating or making decisions
• Feeling unsafe even in safe environments
• Difficulty in relationships – either pushing people away or clinging
• Inability to relax or switch off
• Low tolerance for stress or change

Many people do not realise that these symptoms are connected to their nervous system. They may have been told they are anxious, depressed, or just need to relax – when in fact, their nervous system is stuck in a survival state.

The Connection to Trauma

Nervous system dysregulation is one of the most common consequences of trauma. When your system has been repeatedly overwhelmed – whether by a single event, ongoing abuse, or chronic unsafety – it adapts by staying in a state of readiness. This was protective at the time, but it becomes a problem when it persists in the absence of threat.

Understanding this connection is not about labelling yourself. It is about recognising that your symptoms make sense given what you have been through, and that change is possible. Trauma Responses

How Therapy Helps

Therapy for nervous system dysregulation focuses on:

• Helping you understand how your nervous system works and why it is stuck
• Developing practical strategies for regulation – bringing your system back to a balanced state
• Processing the underlying traumatic experiences that caused the dysregulation
• Building body awareness – learning to notice and respond to your nervous system's signals
• Gradually expanding your capacity to tolerate stress, emotions, and change
• Restoring a sense of safety in your body and in the world

I work as an integrative psychotherapist. All sessions are held online via a secure video platform, accessible from anywhere in the UK. Online Therapy UK

If you are experiencing nervous system dysregulation and would like to explore therapy, I offer a short, free introductory call. There is no obligation.