| A | B |
| common cold (Coryza) | catarrhal inflammation of the mucous membranes in the nose |
| allergic rhinitis | inflammation of the nasal passages |
| tonsilitis (strep throat) | inflammation of the tonsils from strep bacteria |
| sinusitis | inflammation of the sinuses |
| influenza | common viral infection that can be deadly |
| bronchitis (acute) | inflammed bronchioles - sudden onset |
| bronchitis (chronic) | inflammed bronchioles (can be caused by long term smoking) |
| emphysema | the air sacs of the lungs are damaged and enlarged causing breathlessness |
| bronchial asthma | constriction of breathing usually due to irritants, sometimes emotions/exercise |
| bronchiectasis | abnormal widening of the bronchi or their branches causing a risk of infection |
| lobar, lobular, legionnaires pneumonia | fluid in the lungs caused by bacterial infection |
| pneumocystis pneumonia | an infection that causes fluid buildup caused by a fungus |
| viral pneumonia | infection that causes inflammation and fluid buildup due to a virus |
| lung abscesses | pus accumulation in lungs when a microorganism is inhaled from infected teeth, sinus, tonsils, etc. |
| tuberculosis | an infectious bacterial disease characterized by the growth of nodules in the tissues, especially lungs |
| pleurisy/itis | inflammation of the lung membrane & chest activity |
| empyema | the collection of pus in a cavity, especially in the pleural cavity by ulcerated tumors & abscesses |