Pain in the left chest 5 centimeters above the nipple may be caused by trauma, breast lesions, rib lesions, coronary artery disease, and other causes. 1. Trauma: pain at 5 centimeters above the nipple on the left chest may occur when the skin tissue on the left chest and above the chest is hit and squeezed, resulting in tissue damage. 2. Mammary lesions: Mastitis, breast abscess, breast hyperplasia, breast tumor and other mammary lesions can cause local tissue stimulation or compression by inflammation, which may cause pain 5 centimeters above the nipple on the left chest. 3. Rib lesions: for example, costochondritis, which can lead to bulging and swelling of the lesion area, and the pain can be radiated to 5 centimeters above the nipple on the left chest, which is manifested as hidden pain. 4. Coronary heart disease: coronary heart disease is usually manifested as chest squeezing pain, such as tightness and pressure, sometimes radiating to the neck, upper limbs and jaw and other parts of the body, which will cause pain in the left chest 5 centimeters above the nipple. It is recommended that patients with pain 5 centimeters above the nipple on the left chest, after excluding physical causes such as trauma, need to consult a doctor in a timely manner, improve the breast and chest imaging examination and other items, to clarify the cause of the disease, and receive timely treatment.