http://www.ncbi.nlm.nih.gov/pmc/articles/PMC181074/
Violence
Violence has been associated with cocaine use. Cocaine-induced psychiatric symptoms undoubtedly contribute to the emergence of violence. In a study of 31 patients with cocaine-induced psychiatric symptoms, 55% had cocaine-related violent behaviors.7 In a telephone survey of 452 cocaine users, the following symptoms were reported: anger (42%), violence (32%), and suspiciousness or paranoia (84%).6 Violent crimes were committed by 46% of users, usually to get crack.6 In this same report, the authors discuss an additional study, which found that 26% of 200 crack users admitted to committing a crime while on crack; 95% of these crimes were violent.6 The authors of this report hypothesized that violent behavior associated with cocaine use is predictable based on the effects cocaine has on neurotransmitter dysfunction. Besides an increase in levels of neurotransmitters in the brain's pleasure centers, dramatic change in levels of norepinephrine and serotonin in other parts of the brain might provoke aggression, hyperactivity, impaired judgment, and paranoia.
Inhalation of crack cocaine has been found to produce a greater amount of anger and violence than intranasal use of cocaine.14 Similarly, daily use of crack cocaine has been associated with a greater number of illicit activities.15
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Zim: Note the second paragraph.
Mad Poet Strikes Again.
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