Common disease factors for pain under the left rib breast.
First: pre-existing lung disease complicating a pneumothorax.
Second: patients prone to heart disease due to hypertension and hyperlipidaemia.
Third: pleurisy in patients with tuberculosis disease, following the development of pleural adhesions.
Fourth: acute mastitis due to bacterial infection of the maternal nipples.
Fifth: common in middle-aged, elderly, menopausal women with endocrine dysfunction or genetic factors, leading to having breast cancer.