Post-traumatic stress disorder (PTSD) is a difficult-to-cure mental health condition that is caused by experiencing a traumatizing event, such as interpersonal violence or disaster. While sufferers of PTSD have existed across all of human history and the condition is even observed in animals, the diagnosis of this condition only appeared in the 1970s after the Vietnam War. PTSD patients are widely known to suffer from various symptoms from recurring flashbacks, anxiety, and negative alteration in cognition.