<Ul> <Li> Aortic dissections </Li> <Li> Autoimmune disorders such as systemic lupus erythematosus (or drug - induced lupus erythematosus), Autoimmune hepatitis (AIH), rheumatoid arthritis and Behçet's disease . </Li> <Li> Bacterial infections associated with pneumonia and tuberculosis </Li> <Li> Chest injuries (blunt or penetrating) </Li> <Li> Familial Mediterranean fever, an inherited condition that often causes fever and swelling in the abdomen or the lungs </Li> <Li> Fungal or parasitic infections </Li> <Li> Heart surgery, especially coronary - artery bypass grafting </Li> <Li> Cardiac problems (ischemia, pericarditis) </Li> <Li> Inflammatory bowel disease </Li> <Li> Lung cancer and lymphoma </Li> <Li> Other lung diseases like cystic fibrosis, sarcoidosis, asbestosis, lymphangioleiomyomatosis, and mesothelioma </Li> <Li> Pneumothorax </Li> <Li> Pulmonary embolisms, which are blood clots that enter the lungs </Li> </Ul> <Li> Autoimmune disorders such as systemic lupus erythematosus (or drug - induced lupus erythematosus), Autoimmune hepatitis (AIH), rheumatoid arthritis and Behçet's disease . </Li> <Li> Bacterial infections associated with pneumonia and tuberculosis </Li> <Li> Chest injuries (blunt or penetrating) </Li>

Why does my upper back hurt when i laugh