Hyperprolactinaemia is one of the most common endocrinological disorder at women at the reproductive age. Prolactin is produced by the anterior lobe of the pituitary.The main role of prolactin is associated with mamotrophic action and lactogenesis. Hyperprolactinaemia causes several symptoms such as menstrual disorders, infertility, decrease of sexual function, galactorrhea in women and gynecomasty, impotence and decrease of semen quality in men. Recent studies have presented prolactin as a homone involved in many metabolic processes. Long-term consequences of high prolactin serum concentration are related to higher risk of cardiovascular system disease, disturbances in lipid profile and immunological system. Hyperprolactiaemia causes decrease of bone mass density (BMD). High serum prolactin levels lead to increase of the risk of osteopenia or/and osteoporosis. Decrease of BMD results from hypoestrogenism induced by hyperprolactinaemia and also by the direct negative influence of prolactin on bone. Hyperprolactinaemia related to prolactinoma significantly (more than functional hyperprolactiaemia) increases the risk of osteopenia, osteoporosis and bone fractures. Important group of patients threatened by osteoporosis and bone fracture is constituted by women which use antipsychotic drugs (which induce hyperprolactinaemia). Hyperprolactinaemia diagnosed in patients should be treated as soon as possible. Hyperprolactinaemic patients should be diagnosed in the direction of osteopenia and osteoporosis. When diagnosis is confirmed proper treatment is indicated.
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