Learn5 min
Hypervigilance, dissociation and shutdown
When the nervous system stays braced, or switches off altogether.
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Hypervigilance is a state of heightened alertness — scanning rooms, reading faces, anticipating problems before they happen. It often develops when danger was unpredictable, so staying alert felt like the only way to stay safe.
Hypervigilance can look like
- Struggling to relax even when nothing is currently wrong
- Startling easily at sudden noise or movement
- Constantly assessing other people's moods
- Difficulty sleeping because 'switching off' feels unsafe
Dissociation and shutdown sit at the other end of the spectrum — a kind of protective disconnection from feelings, body sensations, memory or surroundings, which can develop when fighting or fleeing wasn't possible.
Dissociation and shutdown can look like
- Feeling foggy, distant, or like you're watching yourself from outside
- Losing time, or gaps in memory for ordinary events
- Feeling numb or 'switched off' during emotionally significant moments
- A heavy, weighted stillness, or difficulty moving or speaking
The Dissociation and Window of Tolerance modules go into more depth on these states and gentle ways of working with them.
