When it comes to chest tightness and chest pain, many people will immediately associate with heart problems, such as myocardial infarction. In fact, there are many causes of chest pain. In addition to heart disease, it may also be caused by other organ diseases. The following is to introduce which 6 causes of chest tightness and chest pain, and what are the characteristics of these diseases. 1. Heart disease Symptoms: there is dull pain, but the pain point is not obvious. The pain will not be reduced or enhanced after changing the posture. The most special pain of myocardial infarction is that you can't point out the "definite point" of pain, and changing different positions will not be more painful or even less painful. The most obvious symptom is actually "when you exercise and your heart beats, you will feel dull and painful nearby". If you always feel chest pain after exercise, you may have to check the related functions of the heart. Aortic dissection is a ...