An external trigger refers to something outside of you that causes a certain reaction or response in you. It could be an event, situation, or person that prompts a specific behavior or feeling in you. Full definition
There are external triggers at thresholds and an immense and complex response in planetary ocean and atmospheric flow fields. (watertechbyrie.com)
Try this: Along with mindful breathing, keeping a stress diary may help identify and avoid external triggers for flare - ups. (myobuddy.com)
These issues can be influenced by stress from external triggers, including trauma, family issues, medical issues, work stress, relationship issues, and grief and loss. (psychologytoday.com)