Which condition can cause noncardiac chest pain?

Noncardiac chest pain can be caused by various conditions that are not directly related to heart problems. Pneumonia is one such condition. It involves inflammation of the lungs, which can lead to symptoms such as cough, fever, shortness of breath, and chest pain. The chest pain experienced during pneumonia is typically due to the irritation of the pleura (the membrane surrounding the lungs) or the chest wall, and it may intensify with deep breaths, coughing, or movement.

In contrast, the other conditions listed—angina, myocardial infarction, and stroke—are primarily associated with cardiac issues. Angina and myocardial infarction originate from problems with the heart's blood supply and are indicative of coronary artery disease. A stroke generally affects brain function and may cause neurological symptoms but does not typically present as chest pain. Therefore, pneumonia stands out as a noncardiac cause of chest pain in this context.