How Do Trauma Triggers Form?

Trauma triggers form when the nervous system learns to associate a cue, situation, or experience with danger. When something frightening, overwhelming, or harmful happens, the nervous system pays attention to anything that might help identify that danger in the future.

For instance, imagine that you were a child and approached a stray dog. Before you could get close, an adult suddenly yelled, grabbed you, and pulled you away because they were worried the dog might be dangerous. Your nervous system may have learned to associate dogs with danger. In the future, seeing a dog may trigger anxiety or the urge to get away, even when the dog is friendly and poses no threat.

The nervous system is not trying to determine whether every dog is dangerous. It is trying to avoid being bitten.

Triggers are not always the danger itself. Sometimes they are cues that reliably came before the danger. For example, a child whose caregiver routinely said, “Go get my belt,” before a beating may eventually become triggered by those words. The words themselves are not harmful. However, the nervous system learned that hearing those words meant danger was about to occur.

Because of this, triggers can form around sounds, smells, facial expressions, emotions, body sensations, places, people, situations, or other cues that were associated with danger. When a threat occurs repeatedly, the trigger formed may become stronger.

This page is part of the Why Do I Get Triggered Without Knowing Why? section of the CommuniDID site, which explains how trauma associations form and why the nervous system can react automatically before you consciously recognize what caused the reaction.

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