Many young women come to the hospital with the main symptom of breast swelling and pain in the premenstrual period, which is relieved after the period. The most common diagnosis is: lobular hyperplasia of the breast. The specific cause may be related to the hormone level in the body or the high sensitivity of the mammary glands to hormones. Suggestion: Self-examination 3-6 days after menstruation, or ultrasound examination in the hospital. General pain does not affect the work, life can be without medication. If the pain is serious, it can be treated with oral medication such as lactotrophin and breast y elimination. If the symptoms are very serious, but the examination of breast hyperplasia is not obvious, you can take oral treatment of free pills, which is the Chinese medicine said that qi stagnation in the chest, you need to regulate their own emotions, stay optimistic. Preventive methods: eat less fried food, eat more vegetables, eat less anti-seasonal vegetables rush artificial breeding animals, avoid staying up late. Feeling good, etc.