The Neurobiology of Trauma: What Happens Next? Understanding the Brain and Body’s Trauma Responses – Part 2

In Part 1, we explored how the brain processes threat – from the moment a stimulus is received to the way trauma can disrupt our internal admin system. Now that we’ve covered what happens in the brain during a traumatic event, we’re moving into the next phase: how that disruption plays out in real life.

This part is all about responses: the ways we adapt to survive, even when the danger is long gone.

TL;DR

  • Trauma responses (like fight, flight, freeze, shutdown, or fawn) are survival strategies – not personality flaws.
  • These responses are shaped by what the brain and body perceive to be the safest option.
  • They’re not always obvious: trauma can look like anger or numbness, over-explaining or zoning out.
  • Naming your response can help you understand what your nervous system is trying to do and how to support it.

 

Understanding the Freeze Response

 

Your Body’s Job Is to Keep You Alive

I need you to hear me when I say: your body is not trying to sabotage you. It’s trying to keep you safe (often in ways that made perfect sense then, but might be confusing now).

Once your alarm system (amygdala) flags a threat, the body doesn’t wait for a team meeting. It just acts. The sympathetic nervous system revs up, or in some cases, the system slows everything down. These responses are often called “trauma responses,” but that name can be a bit misleading. They’re survival responses.

The Main Trauma Responses: Beyond Fight or Flight

You’ve likely heard of “fight or flight,” but that’s just the tip of the iceberg. Trauma can trigger a range of adaptive reactions depending on what your brain decides will give you the best chance of survival.

  1. Fight: The Protector

Your system gears up for battle. You might feel a surge of energy, anger, or the need to assert control.

Might look like: snapping at loved ones, aggression, rigid thinking, controlling behaviour, defensive arguments.

  1. Flight: The Escape Artist

The urge is to run – not just physically, but mentally. You might throw yourself into work, leave relationships before they get serious, or struggle to stay present.

Might look like: anxiety, perfectionism, avoidance, overthinking.

  1. Freeze: The Stillness Strategy

Your system hits the brakes while your foot’s still on the gas. There’s internal panic, but everything on the outside looks still. This is a hyperaroused state: your body is revved up, but you feel stuck.

Might look like: feeling paralysed or unable to act, difficulty making decisions, zoning out mid-convo, being hyper-aware but unable to respond, going blank when asked a question or intense internal panic without external action.

  1. Shutdown (Collapse): The Full Power-Down

Your system plays dead – goes completely offline. This is hypoarousal: low energy, low engagement, low everything. It’s the body’s way of tapping out when threat feels completely overwhelming or inescapable. Like the fuse blows to protect the system from further damage.

Might look like: emotional numbness, not wanting to get out of bed, disconnection from your body or feeling like the world is happening far away (dissociation), extreme exhaustion, apathy – i.e. not caring about anything anymore.

  1. Fawn: The Please & Appeaser

That chronic people-pleasing? It’s not weakness – it’s a brilliant way of surviving in unsafe relationships.

Might look like: people-pleasing, codependency, struggling to say no, merging with others’ needs.

  1. Cry for Help / Attach

Less often discussed, this response drives us to seek connection during threat. It’s rooted in our biology; connection is safety.

Might look like: reaching out obsessively, extreme fear of abandonment, clinging.

These Are Adaptations, Not Defects

Most people experience a mix of these at different times. They’re not fixed categories. Some people live mostly in freeze, others ping between fawn and fight depending on the situation. They’re not your fault.

They’re your nervous system doing its best with what it’s learned.

Why You Might Not Recognise It

Not all trauma looks dramatic. Some responses look like “just being really busy” or “overthinking everything” or “being the strong one.”

That’s what makes trauma so insidious…decontextualised it looks like “personality”. If you’ve ever thought, “I don’t even know who I am,” you’re not alone. That confusion can come from living in survival mode for so long, you’ve lost touch with who you are beneath the coping.

When the Response Becomes the Pattern

A trauma response is brilliant in the moment. But when it becomes your default – even when you’re no longer in danger – that’s when it starts to cause pain.

Your system doesn’t know the threat is over. So it keeps choosing the strategy that once kept you safe. That’s some next-level loyalty.

A Note on the Nervous System

Behind each of these responses is a beautifully complex system (the autonomic nervous system, if we’re being fancy). It’s what governs your stress responses –  and it works fast. Trauma-informed therapy, body-based practices, and self-awareness can all help your system learn new patterns.

We’ll dive deeper into those in Part 3.

Coming Up in Part 3:

We’ll talk about how to support your system when it’s stuck, ways to work with (not against) your trauma responses, and how healing happens slowly, kindly, and at your pace.

Until then, be gentle with whatever response has been keeping you going. It’s been trying to help.

Your trauma response isn’t who you are, it’s what helped you survive. But if those responses are starting to feel more like limitations than lifelines, you don’t have to navigate that alone.

Whether you shut down, lash out, fawn, or freeze – there’s a way forward that doesn’t involve fighting your own nervous system.

Connect with a therapist at inMind to explore safe, supportive ways to come back to yourself.

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