Elevated prolactin can affect reproductive hormone regulation. Possible consequences include menstrual changes, reduced fertility, breast milk production outside expected circumstances, breast enlargement and sexual difficulties. Symptoms vary, and not every person with an elevated level experiences all or any of them.
Hyperprolactinaemia means an elevated level of prolactin, a hormone produced by the pituitary gland. Dopamine normally restrains prolactin release, so some D2-blocking medicines can increase it. Other physiological, medical and medication causes also exist. A raised result requires interpretation in context rather than automatic attribution to an antipsychotic or a single disease.
Sexual function has many influences, including mood, other drug effects, relationships and physical health, so prolactin should not be assumed to explain every concern. Assessment should be private, respectful and inclusive of the person’s priorities. Menstrual or breast changes may also need evaluation for other causes. These effects can influence wellbeing and willingness to continue medication, making direct discussion important. A treatment may control psychosis while causing a burden that deserves active management. The aim is an acceptable overall plan rather than expecting the person to disregard reproductive or sexual health.
Symptoms may be difficult to mention because they feel private or embarrassing. Direct, neutral questions can make discussion easier. A person may value sexual or reproductive function highly even when psychiatric symptoms are well controlled. Recognising that priority supports genuine shared decision-making and can prevent distressing effects being concealed until the person feels their only option is stopping treatment without guidance.
Further reading: DailyMed prescribing information (1); DailyMed prescribing information (2).
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