Endocrine disorders may cause breast swelling and pain. The hormones produced by a woman’s endocrine system should be in balance under normal circumstances. Once this balance is disturbed, it is said to be an endocrine disorder. Endocrine disorders can cause many diseases, and breast swelling and pain are highly endocrine related. Before a woman’s period, many people will experience breast swelling and pain, which is also caused by endocrine disorders. Excessive mood swings, staying up late, and excessive stress may cause endocrine disorders, which eventually lead to breast swelling and pain as well as breast enlargement. The painful swelling of the breast may also be caused by breast enlargement and should go for regular breast health checks. In daily life, you should pay attention to keep your mood happy and avoid endocrine disorders caused by overexertion or bad emotions. If the situation is more serious, you also need to use Chinese medicine to regulate the endocrine.