PTSD and psychotic Symptoms can co-occur. In clinical terms, PTSD is described as consisting of three clusters of symptoms: re-experiencing symptoms, avoidance symptoms, and hyperarousal symptoms. However, some mental health professionals believe that the experience of psychotic symptoms should be considered as an addition to that list, given that they commonly occur among people with PTSD.
Psychotic Symptoms
Before the relationship between PTSD and psychotic symptoms is discussed, it is first important to describe what would be considered a psychotic symptom.
Psychotic symptoms can be divided into two groups: positive symptoms and negative symptoms.
Positive symptoms are characterized by the presence of unusual feelings, thoughts, or behaviors. Positive symptoms include such experiences as hallucinations or delusions. A hallucination could be hearing voices that no one else can hear, or seeing things that are not really there.
Delusions are ideas that a person believes are true despite the fact that they may be unlikely or odd. For example, people with delusions may believe that the CIA is spying on them, or that aliens are controlling their behaviors or thoughts.
Negative symptoms are characterized by the absence of experience. For example, a person with negative symptoms may not be emotionally expressive. She may have difficulty speaking, may not say anything for days on end, or be unable to persist at simple tasks or activities, such as getting dressed in the morning.
These positive and negative symptoms are often associated with the diagnosis of schizophrenia; however, they are also seen in other disorders, such as PTSD.
Psychotic Symptoms in PTSD
Researchers at the University of Manitoba, Columbia University, and the University of Regina examined the data on 5,877 people from across the United States in order to determine the rates with which people with PTSD experience different psychotic symptoms.
They found that, among people with PTSD, the experience of positive psychotic symptoms was most common.
Approximately 52% of people who reported having PTSD at some point in their lifetime also reported experiencing a positive psychotic symptom.
The most common positive symptoms were:
Believing that other people were spying on or following them (27.5%)
Seeing something that others could not see (19.8%)
Having unusual feelings inside or outside of their bodies, such as feeling as though they were being touched when no one was really there (16.8%)
Believing that they could hear what someone else was thinking (12.4%)
Being bothered by strange smells that no one else could smell (10.3%)
Believing that their behaviors and thoughts were bring controlled by some power or force (10%)
The researchers also found evidence that the more PTSD symptoms a person was experiencing, the greater the likelihood that they would also experience positive psychotic symptoms.
To take their study a step further, the researchers also looked at what traumatic events were most commonly related to the experience of psychotic symptoms. They found the following to be most strongly connected:
Being involved in a fire, flood, or natural disaster
Seeing someone get seriously injured or killed
Experiencing tremendous shock as a result of a traumatic event that happened to a close relative, friend, or significant other
http://ptsd.about.com/od/relatedconditions/a/Psychosis.htm