Posttraumatic Stress Disorder (PTSD) is defined as Anxiety disorder which is characterized by the following:

(1) repeated mental images of experiencing a traumatic event;.

(2) emotional numbing and detachment, and;.

(3) hypervigilance and chronic arousal

Other definition:

Posttraumatic Stress Disorder ( PTSD ) is an anxiety disorder that develops after a severe traumatic event or experience. Several distressing symptoms are common in the person with PTSD, including Psychic numbing, emotion anesthesia, increased arousal, or unwanted re-experiencing of the trauma. These symptoms can effect any sex or age group. Anxiety, irritability, and depression are also common in people who have PTSD. People with PTSD have a diminished ability to experience emotion, including tenderness or intimacy. There may be problems falling or staying asleep. A person with PTSD will avoid any reminders of the trauma but re-experiencing the event in dreams, nightmares, or painful memories are common. Some people will turn to drugs or alcohol to escape the pain of PTSD. While others may become suicidal or self-defeating.

Other definition:

A Posttraumatic Stress Disorder (PTSD) is a psychological syndrome involving flashbacks to traumatizing events, nightmares, and feelings of anxiety and helplessness in the face of threats; common among soldiers in combat and sexually abused children

Other definition:

A Posttraumatic Stress Disorder (PTSD) consists of post-disaster behavioral symptoms including sleep disorders, social withdrawal, uncontrollable thoughts about the event, and a desire to avoid thoughts of the event

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