“[I]ndividuals who suffer from persecutory delusions and negative affect are more likely to act on their delusions,” they said. Angry affect is a critical variable, especially when coupled with feelings of being spied upon, followed, plotted against, or being under external control. They pointed out as well that depression may be a risk factor when accompanied by a recent history of violence and/or alcohol use. Active manic symptoms are also associated with increased risk of engaging in a violent crime, but mostly when associated with comorbid substance abuse.
Scott and Resnick suggest using structured risk assessments to help gather appropriate data and reviewing research findings to identify violence-related risk factors associated with psychotic and mood disorder symptoms. “Like a good weather forecaster, the clinician does not state with certainty that an event will occur,” they concluded. “Instead, he or she estimates the likelihood that a future event will occur.
For more in Psychiatric News about assessment of risk for violence, see the article, “Experts Discuss Factors That May Lead to Violence Among Mentally Ill People.”
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