Breast pain is generally considered to be caused by breast hyperplasia. It usually occurs or worsens before menstruation and decreases or disappears after menstruation. In this case, it is recommended to have a breast ultrasound, which generally shows uneven low echo areas. If cysts are formed, anechoic areas will be reported. You can also undergo a mammography X-ray examination, which often shows ground glass-like or cotton wool-like shadows. If financial conditions allow, further breast MRI examination can be conducted to more accurately determine the benign or malignant nature of the condition.