As part of the normal physiological control of prolactin release, dopamine released from the hypothalamus inhibits the release of prolactin from the pituitary gland. This is why antipsychotic medications that are potent blockers of dopamine D2 receptors (like risperidone, paliperidone, and high-potency first-generation antipsychotics) very commonly cause hyperprolactinemia. (Peuskens et al., 2014). This occurs much…