Thought I answered this queston - sorry if it did not "take"
I am not a physician and from what I've read this is quite rare - one post elsewhere online suggested getting tested for more rare problems like Lyme Disease.
Male nipples and round ligaments of the uterusby
have nothing to do with delivering milk. Lactation has never been observed in any healthy male mammal. I had to qualify... in the endocrine system can also cause gynecomastia , enlargement of the male breast. Still, these are rare...