Chest pain may be caused by problems with the heart, lungs, esophagus, muscles and nerves, according to WebMD. The only way to accurately diagnose unexplained chest pain is with a professional medical evaluation.
Common causes of chest pain associated with heart issues include coronary artery disease, a heart attack, myocarditis, pericarditis and hypertrophic cardiomyopathy. Lung problems that cause chest pain include pleuritis, pneumonia and lung abscesses, as WebMD details.
Coronary artery disease is a blockage in the blood vessels of the heart which causes a reduced flow of blood and oxygen to the heart. While pain caused by this condition is not likely to inflict lasting damage on the heart, it is a sign of increased risk for a heart attack, explains WebMD. Chest pain from this condition may spread to the shoulder, neck, jaw or back. It is triggered by excitement, exercise or emotional distress.
Heart attacks reduce blood flow through the heart vessels and kill the cells of the heart muscle. Pain caused by a heart attack is more severe that pain caused by CAD and may be accompanied by sweating, nausea, difficulty breathing and severe weakness, notes WebMD. Myocarditis is a condition in which the heart muscles become inflamed, and it causes fever, fatigue, rapid heartbeat and trouble breathing in addition to chest pain. These symptoms resemble those of a heart attack, but no blockage occurs with myocarditis.