To the Editor: Over the past 15 years, it has become increasingly evident that cannabis use carries an increased risk for the development of psychosis (1,2). At the same time, medicinal cannabis (medical marijuana) has been legalized in many states, with minimal restrictions on prescribing indications. The present case illustrates the evolution of a psychotic disorder, in the setting of medicinal cannabis use, in a young man at high risk for psychosis.
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