Abstract
Hyperprolactinemia causes hypogonadotrophic hypogonadism. Hyperprolactinemia can be pre-existing in some patients with schizophrenia. Dopamine is the most important prolactin-inhibiting factor, and dopaminergic hyperactivity has been implicated in the pathophysiology of psychosis. Since dopamine is a prolactin-inhibiting factor and dopamine imbalanced has been implicated in the pathophysiology of psychotic disorders, we investigated the probable relationship between hyperprolactinemia and the development of psychotic symptoms, in a patient with hypogonadism due to hyperprolactnemia and subsequent first episode of psychosis. Since dopamine is a prolactin-inhibiting factor and dopamine imbalance has been implicated in the pathophysiology of psychotic disorders, we investigated the probable relationship between hyperprolactinemia and the development of psychotic symptoms. We present the case of a patient with hypogonadism secondary to chronic, untreated hyperprolactinemia who developed acute psychotic symptoms. Psychotic symptoms resolved soon after treatment with aripiprazole in conjunction with cabergoline, with a concomitant decrease in serum prolactin level. This is an interesting case illustrating a complicated relationship among hypogonadism secondary to a prolactinoma and dopamine and psychosis.
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