Lee, aka traveler nailed the trigger definition. The trigger is like a powerful reminder. It is a mechanism that begins a process, that repeats over and over again. In this case, reading about an event can suddenly remind you of past abuse. But the reminder is much more than a memory, it is called an "abreaction". Simply put, you are there, when you were abused, with the inability to help yourself. It is overwhelmingly controlling. When it is over, the trigger only lasts a few moments, the negative feelings, fear and destructive force can last for days or longer.
This can lead to demanding "survival". Using coping mechanisms like pornography, drugs, or alcohol can feel like we are bettering ourselves, and they work to get us out of the terrible feelings of destruction, but ultimately it is like eating rat poison to get the bad taste of manure out of our mouth. That too is destructive.
Only recovery can help heal, can make the triggers less, can help support the survivor so the destruction is less, to give hope and courage till the day you can say, "I am truly free."
It is coming fellow survivor,
MaleSurvivor Moderator Emeritus 2012 - 2014