Women who have pain in the left side of the heart usually have the following factors: 1. Cardiogenic factors, such as coronary atherosclerotic heart disease, unstable angina, myocarditis, pericarditis, infective endocarditis, heart valve disease, congenital heart disease, all have symptoms of pain in the left side of the heart. 2. Women who have cardiac neurosis also have pain in the left side of the heart. 3. Respiratory diseases, such as left pleural effusion, lung infection, large pneumothorax, etc., will also have chest pain. 4. If a woman has left-sided mastitis, lobular hyperplasia of the breast, breast occupancy, tumor, etc., she will also have symptoms of heart pain.