Coughing heartburn is clinically common in diseases of the respiratory and cardiovascular systems. The more common respiratory diseases are caused by inflammatory reactions of the respiratory system such as tracheitis, bronchitis, pneumonia, lung abscess, bronchiectasis, and pneumothorax due to trauma, as well as specific infections including tuberculosis caused by Mycobacterium tuberculosis and other occupying lesions of the lung. These include lung stones and malignant tumors of the lung. Cardiovascular system diseases, such as upper respiratory tract infections, may be complicated by myocarditis, coronary artery disease, hypertension, and heart disease causing myocardial ischemia and hypoxia, resulting in angina pectoris.