Most of the causes of breast overflow are due to hyperprolactinemia, which is caused by pituitary tumors and can be diagnosed with the help of a blood sex hormone six test and a cranial CT scan. Depending on the severity of the condition and the size of the pituitary tumor, medication, surgery or radiation therapy can be chosen for this condition. Medications can be oral bromocriptine and vitamin B6, which can suppress prolactin levels and relieve the symptoms of breast overflow. For patients with larger pituitary tumors, surgical removal, radiation therapy, etc. need to be considered. In addition, tests are needed to rule out the possibility of breast enlargement, breast fibroids, and breast cancer. These can also cause breast overflow to occur. A breast ultrasound or mammogram scan is needed to make a clear diagnosis, and you can usually palpate yourself to check for abnormal masses.