Posttraumatic Stress Disorder (cont.)

The following three groups of symptom criteria are required to assign the diagnosis of PTSD:

• Recurrent re-experiencing of the trauma (for example, troublesome memories, flashbacks that are usually caused by reminders of the traumatic events, recurring nightmares about the trauma and/or dissociative reliving of the trauma)
  
  
• Avoidance to the point of having a phobia of places, people, and experiences that remind the sufferer of the trauma or a general numbing of emotional responsiveness
  
  
• Chronic physical signs of hyperarousal, including sleep problems, trouble concentrating, irritability, anger, poor concentration, blackouts or difficulty remembering things, increased tendency and reaction to being startled, and hypervigilance (excessive watchfulness) to threat

The emotional numbing of PTSD may present as a lack of interest in activities that used to be enjoyed (anhedonia), emotional deadness, distancing oneself from people, and/or a sense of a foreshortened future (for example, not being able to think about the future or make future plans, not believing one will live much longer). At least one re-experiencing symptom, three avoidance/numbing symptoms, and two hyperarousal symptoms must be present for at least one month and must cause significant distress or functional impairment in order for the diagnosis of PTSD to be assigned. PTSD is considered of chronic duration if it persists for three months or more.

A similar disorder in terms of symptom repertoire is acute stress disorder. The major differences between the two disorders are that acute stress disorder symptoms persist from two days to four weeks, and a fewer number of traumatic symptoms are required to make the diagnosis as compared to PTSD.

In children, re-experiencing the trauma may occur through repeated play that has trauma-related themes instead of or in addition to memories, and distressing dreams may have more general content rather than of the traumatic event itself. As in adults, at least one re-experiencing symptom, three avoidance/numbing symptoms, and two hyperarousal symptoms must be present for at least one month and must cause significant distress or functional impairment in order for the diagnosis of PTSD to be assigned. When symptoms have been present for less than one month, a diagnosis of acute stress disorder (ASD) can be made.

Symptoms of PTSD that tend to be associated with C-PTSD include problems regulating feelings, which can result in suicidal thoughts, explosive anger, or passive aggressive behaviors; a tendency to forget the trauma or feel detached from one's life (dissociation) or body (depersonalization); persistent feelings of helplessness, shame, guilt, or being completely different from others; feeling the perpetrator of trauma is all-powerful and preoccupation with either revenge against or allegiance with the perpetrator; and severe change in those things that give the sufferer meaning, like a loss of spiritual faith or an ongoing sense of helplessness, hopelessness, or despair.

Source: MedicineNet.com
http://www.medicinenet.com/posttraumatic_stress_disorder/article.htm