I have chest pain with no other symptoms. It lasts for a couple of seconds, but reappears every day. Breathing doesn't worsen it, neither does exercise. What is it?

Chest pain is a very common symptom, but the cause can be difficult to pinpoint without further examination. Generally speaking, most chest pain is caused by muscular strain and tension in your chest wall or muscles interacting with your rib cage. However, it could also be indicative of other illnesses such as pleurisy, angina (heart attack/coronary artery disease), pneumonia or infection in the lungs, GERD (gastroesophageal reflux disease), pulmonary embolism (blood clot in the lung) and more serious conditions like aortic dissection.

Given the given information you have provided about your chest pain reappearing daily with no other symptoms that worsen it or are associated with exercise, a likely diagnosis would include costochondritis - an inflammation of the cartilage that connects your ribs to your breastbone - which could explain why breathing does not worsen it nor does exercise; as any movement of this area can cause increased discomfort from costochondritis due to swelling and irritation. It is recommended you contact your physician for evaluation if these symptoms persist beyond two weeks. There may be further tests ordered including an X-ray or MRI depending on what is deemed necessary upon examination.