Trauma is a funny thing that has been studied for centuries because of its long-lasting effects on the human psyche. All sorts of personalities from all sorts of backgrounds have put their two cents into the mix and this has led to the world's formal definition of what Trauma is and how it works.
So, what is Trauma? Well, any event can be defined as traumatic if it is stressful, frightening or distressing with long-lasting and difficult to cope with aftereffects. The event can be a single event or an ongoing situation over an extended period. All that matters in trauma is what happened and how the person reacted to the trauma.