PTSD

disorder characterized by illusions that a past traumatic event is recurring and severe reaction to stress-inducing stimuli (often affects veterans and victims of violence)

Post traumatic stress disorder (PTSD) is the term for a severe and ongoing emotional reaction to an extreme psychological trauma. The latter may involve someone's actual death or a threat to the patient's or someone else's life, serious physical injury, or threat to physical and/or psychological integrity, to a degree that usual psychological defenses are incapable of coping. It is important to make a distinction between PTSD and Traumatic stress, which is a similar condition, but of less intensity and duration. Formerly the condition was sometimes known as shell shock or traumatic war neurosis or post-traumatic stress syndrome (PTSS).
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PTSD posttraumatic stress disorder. PTSD abbr. posttraumatic stress disorder Post-traumatic stress disorder A disorder that occurs among survivors [more]PTSD - Community and Resources

Noun
1. an anxiety disorder associated with serious traumatic events and characterized by such symptoms as survivor guilt, reliving the trauma in dreams, numbness and lack of involvement with reality, or recurrent thoughts and images
(synonym) posttraumatic stress disorder
(hypernym) anxiety disorder
(hyponym) battle fatigue, combat fatigue, combat neurosis, shell shock
(part-meronym) survivor guilt

Posttraumatic Stress Disorder is an anxiety disorder that develops as a result of witnessing or experiencing a traumatic occurrence, especially life threatening events. PTSD can cause can interfere with a person's ability to hold a job or to develop intimate relationships with others.