The word “trauma” literally means wound, shock, or injury. Psychological trauma is a person’s experience of emotional distress resulting from an event that overwhelms the capacity to emotionally digest it. The precipitating event may be a one-time occurrence or a series of occurrences perceived as seriously harmful or life-threatening to oneself or loved ones.| Psychology Today
If people didn’t feel fear, they wouldn’t be able to protect themselves from legitimate threats. Fear is a vital response to physical and emotional danger that has been pivotal throughout human evolution, but especially in ancient times when men and women regularly faced life-or-death situations.| Psychology Today
"The grey drizzle of horror," author William Styron memorably called depression. The mood disorder may descend seemingly out of the blue, or it may come on the heels of a defeat or personal loss, producing persistent feelings of sadness, worthlessness, hopelessness, helplessness, pessimism, or guilt.| Psychology Today
Stress generally refers to two things: the psychological perception of pressure, on the one hand, and the body's response to it, on the other, which involves multiple systems, from metabolism to muscles to memory. Some stress is necessary for all living systems; it is the means by which they encounter and respond to the challenges and uncertainties of existence. The perception of danger sets off an automatic response system, known as the fight-or-flight response, that, activated through hormo...| Psychology Today