DOIAbstract
High prolactin levels can occur as a physiological condition in females who are pregnant or lactating. As a pathological condition, hyperprolactinaemia is associated with gonadal dysfunction, infertility and an increased risk of long-term complications including osteoporosis. The most frequent cause of persistent hyperprolactinaemia is the presence of a micro- (<10 mm diameter) or macroprolactinoma ( 10 mm). These pituitary tumours may produce an excessive amount of prolactin or disrupt the normal delivery of dopamine from the hypothalamus to the pituitary; prolactin secretion from the pituitary is inhibited by dopamine released from neurones in the hypothalamus. Medications including anti-psychotics can induce hyperprolactinaemia, whi...
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