Pain in the left two inches of the undershirt may be caused by coronary heart disease, costochondritis, muscle strain in the back and other reasons.
1. Coronary heart disease: due to severe atherosclerosis of the coronary arteries that supply oxygen and blood to the heart, there is an imbalance between the supply and demand of oxygen, which leads to pain in the left side of the undershirt in two inches.
2. Costochondritis: It is caused by friction of muscles, stimulation of exertion, and specific infections such as viral infections. If acute inflammation occurs, it will produce the feeling of severe pain, and the pressure point is more obvious when pressed.
3. Back muscle strain: long hours of work, low head to play the phone, stooping to do housework, etc., which leads to the back muscles are in a long-term load state, over time there will be back muscle spasm and aseptic inflammation, causing back pain, stiffness.
Pain in the left two inches of the undershirt can also be caused by other reasons, so you need to consult a doctor to confirm the diagnosis and standardized treatment.