If there is vague pain near the left clavicle, in the clinic, there are mainly the following types of diseases can lead to: 1, coronary heart disease: induced angina, manifested as vague pain near the left clavicle, coronary heart disease refers to the important blood supply for the heart, oxygen supply of the coronary arteries affected by atherosclerosis, resulting in serious narrowing of the coronary arteries, or even cause occlusive lesions. When patients with coronary artery disease are emotionally stressed, excited, anxious, angry or frightened, myocardial oxygen consumption will increase significantly, and during strenuous exercise, myocardial oxygen consumption will also increase significantly. However, due to the existence of serious lesions in the coronary arteries, blood supply and oxygen supply cannot be supplied in a timely and adequate manner, resulting in insufficient blood supply to the myocardium, which can trigger an attack of angina pectoris, typically in the precordial region, behind the sternum, and the left side of the chest with crushing dull pain or colic; 2, Infections, including shingles, etc., may also present similar symptoms. If you are not able to identify the disease condition yourself, go to the hospital at the first opportunity to clarify the relevant diagnosis.