Plasma luteinizing hormone (LH), prolactin, testosterone, and cortisol
levels were determined in 16 patients after hospital admission for cocaine
abuse, during the course of 4 weeks of hospitalization, and before
discharge. Hyperprolactinemia was found at admission (mean +/- SD, 27.5 +/-
10.2 ng/ml) and persisted until discharge (mean +/- SD, 28.7 +/- 10.8
ng/ml). Plasma LH, testosterone, and cortisol levels were within normal
limits. These findings suggest that persistent elevation of plasma
prolactin levels after cocaine withdrawal may reflect a chronic
cocaine-induced derangement in neural dopaminergic regulatory systems.Abstract Teaser