Breast pain and hyperplasia are related, while purulent discharge might be caused by inflammation within the ducts. Usually, this can be diagnosed through ductoscopy. If it is inflammation, the lesions can be identified under ductoscopy, and then can be treated through washing with metronidazole and gentamicin, achieving a cure. However, there is a scenario where the issue is due to previously forcefully suppressing milk expulsion, leading to a large amount of milk residue in the ducts, causing purulent discharge. In this case, local heat application followed by massage and milk expulsion performed by a professional lactation masseuse can cure the condition. Regular follow-up with ultrasound and mammography of the breast is needed in the future. (Medications should be used under the guidance of a physician.)