Symptomatic Extreme Elevation of Prolactin Related to Risperidone Use

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To the Editor: Risperidone is known to cause hyperprolactinemia; however, it rarely causes an elevation to the degree seen in the case presented here.

Case report. Ms A, a 22-year-old woman, presented to the emergency department in February 2017 with suicidal ideation, auditory and visual hallucinations, and paranoid delusions. Ms A also heard voices that were demanding and mean, and she had not slept in 3 days due to the belief that if she slept she would die.