The official definition of Trauma Informed Care is an organizational structure and treatment framework that involves understanding, recognizing, and responding to the effects of all types of trauma.
In everyday language, it is a mindset to understand that most people we will come in contact with have experienced some sort of trauma and loss that might influence their reactions. We also have to be mindful of how our own history, attachment history, parenting history, relationship history, work history etc affects OUR reactions.
Trauma and PTSD often lead to substance abuse and addiction. http://www.carrierclinic.org presents this video explaining the connection between trauma and addiction, PTSD symptoms, and treatment options for Post-Traumatic Stress Disorder, especially as it relates to alcohol and drug abuse. This is useful information for anyone dealing with traumatic stress or those concerned about PTSD and substance abuse.