This kind of tumor is growing inside the breast ducts, the mass is relatively small, the tumor wall is relatively thin, it is easy to rupture and bleed, and the phenomenon of bloody nipple overflow can be found. If you are currently breastfeeding and find a hard lump inside the areola, consider it to be a symptom of local pressure and other reasons that lead to the accumulation of breast milk, and the hard lump may be accompanied by pain around it. Most often seen in first-time mothers who lack breastfeeding experience, try to let the baby suck more to nurse, if necessary, promptly go to the regular hospital for massage lactation treatment, and need to give the baby the right way to nurse. In either case, if you find a hard lump, you need to go to a regular hospital in time and get the right treatment after diagnosis.