What does nipple discharge feel like with hyperprolactinaemia?

The fluid may feel warm or simply damp on the nipple or clothing. It can be thin or slightly creamy, and the amount may vary. Hyperprolactinaemia means prolactin levels are higher than expected; prolactin stimulates milk production, so discharge can occur outside pregnancy or breastfeeding. Some people also notice irregular periods, reduced fertility, headaches, or changes in vision. Nipple discharge has other possible causes, so its colour and texture cannot identify the cause by themselves.

Arrange an appointment with a clinician for new, persistent, or unexplained discharge. Note whether it comes from one or both nipples, whether it appears spontaneously or only after touch, and its colour and consistency. Mention pregnancy or breastfeeding, medicines and supplements, menstrual changes, headaches, or vision symptoms. Avoid repeatedly checking or squeezing the nipple because stimulation can encourage more discharge. A clinician may examine the breasts and review medicines before deciding whether hormone testing or other evaluation is appropriate.

Seek prompt medical advice for bloody or clear discharge from one breast, a new lump, nipple or skin changes, redness, swelling, or significant pain. Arrange urgent assessment for a severe or new headache with vision changes, especially if these symptoms develop together. These features need evaluation because they can point to breast, infection-related, or hormone-related problems that require different care.

Could a medicine, pregnancy, thyroid problem, or raised prolactin explain this discharge? Do I need a prolactin test, breast examination, or imaging? Should I avoid any medicines or nipple stimulation while this is being assessed?