Hyperprolactinemia in a patient with a pituitary adenoma receiving antipsychotic drug therapy.

Hyperprolactinemia is a common consequence of treatment with an antipsychotic medication. It can result in hypogonadism due to the inhibitory effect of elevated prolactin levels on the hypothalamic-pituitary-gonadal hormonal axis. We present a case of hypogonadism secondary to hyperprolactinemia in a patient taking antipsychotic medication, with radiological evidence of a pituitary microadenoma. The relevance and investigation of hyperprolactinemia in patients being treated with antipsychotic medications are discussed.