Traumatic Brain Injury and the Stress Response: Fight, Flight, and Freeze

How the fight-flight-freeze response relates to Traumatic Brain Injury — understanding your nervous system's survival mode.

The fight-flight-freeze stress response is the biological foundation of many traumatic brain injury presentations. Understanding it demystifies traumatic brain injury and points toward effective interventions.

The Three Stress Responses in Traumatic Brain Injury

Fight: Anger, aggression, irritability — traumatic brain injury channeled outward

Flight: Avoidance, escape, withdrawal — the most common traumatic brain injury behavioral pattern

Freeze: Paralysis, numbness, shutdown — depression and dissociation-type traumatic brain injury

How Chronic Activation Drives Traumatic Brain Injury

When the stress response activates repeatedly or doesn't turn off, it creates the chronic physiological state underlying traumatic brain injury: elevated cortisol, dysregulated neurotransmitters, disrupted sleep.

Working With Your Stress Response in Traumatic Brain Injury

  • Name it: 'My nervous system is in fight/flight/freeze right now'
  • Move: Physical movement discharges the mobilization energy of fight/flight
  • Breathe: Activates the off-switch for the stress response
  • Connect: Safe social engagement signals to the nervous system that the threat has passed

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