There are four common cases of hard lumps in the breast: a. Cystic hyperplasia of the breast, which occurs in women of childbearing age and is characterized by the formation of hyperplastic nodules in the breast with breast swelling and pain, and the size of the nodules and the degree of pain are related to the menstrual cycle. Breast fibroids, mostly related to abnormally high estrogen, have no obvious clinical manifestations, but breast palpation can reveal a hard and mobile lump with smooth borders. Intraductal papilloma is insidious and is often detected by dark red blood stains on the underwear. When the disease progresses to advanced stage, hard irregular lumps can be palpated in the breast, and orange peel sign or dimple sign may appear. Therefore, when you find a lump in your breast, you should immediately go to the hospital for breast ultrasound examination to determine the nature of the lump and cooperate with the specialist to actively treat it, avoiding the abuse of prescriptions to cause disease progression.