Post-traumatic stress disorder (PTSD) is a debilitating mental disorder that follows experiencing or witnessing an extremely traumatic, tragic, or terrifying event. People with PTSD usually have persistent frightening thoughts and memories of their ordeal and feel emotionally numb, especially with people they were once close to.
PTSD, once referred to as "shell shock" or battle fatigue, was first brought to public attention by war veterans, but it can result from any number of traumatic incidents. These include kidnapping, serious accidents such as car or train wrecks, natural disasters such as floods or earthquakes, violent attacks such as a mugging, rape, or torture, or being held captive. The event that triggers it may be something that threatened the person's life or the life of someone close to him or her. Or it could be something witnessed, such as mass destruction after a plane crash.
Most people with post-traumatic stress disorder repeatedly re-live the trauma in the form of nightmares and disturbing recollections during the day. The nightmares or recollections may come and go, and a person may be free of them for weeks at a time, and then experience them daily for no particular reason. They may also experience sleep problems, depression, feeling detached or numb, or being easily startled. They may lose interest in things they used to enjoy and have trouble feeling affectionate. They may feel irritable, more aggressive than before, or even violent. Seeing things that remind them of the incident may be very distressing, which could lead them to avoid certain places or situations that bring back those memories. Anniversaries of the event are often very difficult.
PTSD can occur at any age, including childhood. The disorder can be accompanied by depression, substance abuse, or anxiety. Symptoms may be mild or severe -- people may become easily irritated or have violent outbursts. In severe cases, they may have trouble working or socializing. In general, the symptoms seem to be worse if the event that triggered them was initiated by a person -- such as a murder, as opposed to a flood.
Ordinary events can serve as reminders of the trauma and trigger flashbacks or intrusive images. A flashback may make the person lose touch with reality and reenact the event for a period of seconds or hours, or very rarely, days. A person having a flashback, which can come in the form of images, sounds, smells, or feelings, usually believes that the traumatic event is happening all over again.
Post-traumatic stress disorder can be treated, usually with a combination of psychotherapy and medications (for specific symptom relief, such as for the common accompanying depressive feelings). People with PTSD should seek out a therapist or psychologists with specific experience and background in treatment post-traumatic stress disorder.