The main causes of breast swelling can be divided into the following aspects: 1. The most common clinical manifestation is breast enlargement, which is a frequent clinical symptom in women of childbearing age before the onset of menstruation, with the passage of time, the symptoms will also slowly ease after the menstruation, you can go to the hospital for ultrasound examination to clarify the diagnosis. 2. The company’s main goal is to provide a comprehensive range of products and services to the public.