It is not normal for men to take hormone pills to have hard lumps in their breasts, which may be sebaceous cysts, breast hyperplasia, breast cancer, etc., and need to take timely treatment. 1. Sebaceous cysts: If the hard lumps are located outside the breast glands, they are mostly sebaceous cysts. Generally this kind of cyst is benign, although it does not seriously threaten your health, it may get bigger and bigger, affecting the surrounding tissues, and is usually treated by surgical excision. 2. Breast Hyperplasia: Prolonged hormonal abnormalities may lead to breast diseases, such as breast hyperplasia, which can be accompanied by hard lumps in the breasts. You can follow the doctor’s instructions to use medicines such as lactic acid tablets to reduce breast pain and make the lumps dissipate. If the medication is not good enough, you can take breast lump elimination surgery to treat it. 3. Breast cancer: If the hard lump is located in the breast gland, it may be malignant disease, such as breast cancer. The treatment of breast cancer is generally based on surgery, combined with radiotherapy, chemotherapy, targeted therapy and other comprehensive treatment modalities, depending on the stage and type of breast cancer. It is recommended that patients should consult the doctor in time to find out the cause of the disease and take appropriate treatment as early as possible to avoid delaying their condition.