The reason for the bumps next to the nipples is as follows: 1. Fat particles are fat particles secreted by the sebaceous glands, which have not been cleaned up for a long time and gathered on the nipple surface. 2. Montgomery’s nodules, the openings of the breast ducts are called Montgomery’s nodules, which are normal if they appear during lactation, but if they are not lactated, they need to be examined in a regular hospital. 3,