Chest pain | Angina versus musculoskeletal pain | Pulmonary embolism versus lower respiratory tract infection | Tuberculosis versus lower respiratory tract infection |
Abdominal pain | Crohn’s disease versus enteritis | Appendicitis versus UTI | Ovarian cancer versus IBS |
Dyspnoea | Childhood asthma versus bronchitis | Cor pulmonale versus COPD exacerbation | COPD and aortic stenosis versus COPD alone |