Possible causes of chest discomfort: 1, allergic reaction; 2, asthma; 3, pulmonary fibrosis; 4, pulmonary embolism; 5, pneumonia; 6, bronchiectasis; 7, central disease (hypoventilation); 8, tension and anxiety (hyperventilation); 9, upper airway obstruction; 10, laryngeal fracture; 11, phrenic nerve injury; 12, scoliosis; 13, metabolic acidosis; 14, aspirin overdose; 15 Pneumothorax; 16, chronic obstructive pulmonary disease (COPD); 17, lung cancer; 18, atelectasis; 19, pleural effusion; 20, angina pectoris, myocardial infarction; 21, heart failure; 22, arrhythmia; 23, diaphragmatic weakness (myasthenia gravis, Guillain-Barré syndrome, multiple sclerosis, poliomyelitis, motor neuron disease, muscular dystrophy). Lethal: 1, tension pneumothorax 2, aortic coarctation 3, pulmonary embolism 4, acute myocardial infarction 5, esophageal rupture. Non-lethal: 1, herpes zoster 2, pneumonia 3, cholecystitis 4, rib fracture 5, bone metastases 6, costochondritis 7, pleurisy 8, abscess chest 9, sickle cell anemia 10, esophageal spasm 11, pericarditis 12, gastroesophageal reflux, ulcer disease 13, pancreatitis 14, cervical spondylosis. IV. Possible causes of hemoptysis 1. severe cough 2. tuberculosis 3. pulmonary aspergillus infection 4. lung cancer 5. lung abscess 6. trauma 7. pulmonary embolism 8. bronchitis 9. pneumonia 10. mitral stenosis 11. left heart failure pulmonary edema 12. aortic aneurysm 13. anticoagulants 14. endometriosis 15. goodpastures syndrome 16. systemic lupus erythematosus (SLE) ( Vasculitis) 17, Wegner’s granulomatosis (rhinorrhea) 18, Hereditary hemorrhagic capillary dilation (perioral)