What is PTSD?

PTSD, or Post Traumatic Stress Disorder is a disorder in which someone is mentally scared from a traumatic event that occurred in their lifetime. PTSD is known as a disorder in which one person has gone through a traumatic event in his or her life and can remember that event for the rest of his or her life. This traumatic event can come back as a flashback in ones life. Usually a flashback occurs when a certain noise goes off, then a flashback may occur due to the remembrance of the noise.