###Human: I have red rashes on breast followed by milky discharge. What could cause this? ###Assistant: Hello. I can understand your concern. Milk secretion in nonpregnant women is galactorrhea that can occur due to causes like increased prolactin levels in the body, prolactinomas, continuous usage of antacid like drugs, etc. Rubbing of clothes to the nipple can also lead to discharge. Tight innerwear, allergy to fabric material lead to skin rashes, etc. can aso be the cause for the discharge. So, you, please consult your gynecologist once, get examined and go for serum prolactin levels and if needed sonomammography. With this work up the possible cause of your problem can be identified and treated. I hope I have answered your query. Take care.