Breast swelling and pain, dizziness, it may be caused by breast hyperplasia, which can be diagnosed through breast ultrasound or mammography. Breast hyperplasia is mainly related to endocrine disorders in the body, leading to increased levels of estrogen. When the hormone ratio in the body is unbalanced, estrogen levels increase and progesterone secretion decreases, it can lead to incomplete regression after breast hyperplasia, causing breast tissue proliferation. Therefore, the functional state of the ovaries and whether there is disorder play a very important role in the development of the disease. Additionally, it might be related to differences in the quantity and quality of estrogen receptors in the breast tissue, causing uneven levels of breast proliferation and leading to breast swelling.