What’s wrong with the constant pain under the left breast?

Frequent pain under the left breast may be caused by intercostal muscle strain, breast hyperplasia, intercostal neuralgia.
1. Intercostal muscle strain: frequent pain under the left breast may be caused by intercostal muscle strain, if the patient maintains a posture for a long time, there is pressure and thus cause pain, usually after resting to get relief, the pain will disappear.
2. Mammary hyperplasia: when the ratio of estrogen and progesterone in the patient’s body is out of proportion, the quality and quantity of breast hormone receptors are abnormal, which affects the growth and development of the mammary glands, thus resulting in frequent pain under the left breast.
3. Intercostal neuralgia: when the patient carries heavy objects or the chest is squeezed, resulting in damage to the cartilage of the thoracic rib joints, the costal cartilage area will be enlarged, with obvious localized pressure and pain, and the pain will be significantly aggravated when the patient coughs or engages in activities of the upper limbs.
Mastitis, breast trauma, cardiothoracic diseases, herpes zoster, breast cancer may also appear similar symptoms, should be clarified as soon as possible to take targeted treatment, so as not to cause adverse effects on the body, triggering the emergence of other diseases.