A Cluster of Symptoms
Post Traumatic Stress Disorder (PTSD) is a specific cluster of symptoms six months or more after a person either witnessed or experienced a traumatic event and responded with intense fear, helplessness, or horror. The nervous system is affected in such a way that the person has the following cluster of symptoms:
Re-Experiencing:
An individual with PTSD re-experiences the trauma through intrusive thoughts, nightmares, or flashbacks.
Avoidance:
An individual with PTSD persistently avoids thoughts, feelings and activities associated wit the trauma, and may experience amnesia relating to certain aspects of the event. He or she may also show decreased interest in regular activities, or be afraid of leaving home.



