Cough is one of the most common symptoms of respiratory diseases. This is a protective measure for human body, which is of great significance to prevent respiratory infection by removing foreign bodies and secretions from the outside and eliminating respiratory irritation factors. On the other hand, coughing is also harmful.
Second, it can spread infection in the respiratory tract; Increasing the pressure in the chest and increasing the burden on the heart is not good for patients with heart failure. Severe cough may lead to bleeding of damaged respiratory tract; It can also rupture the subpleural bubbles, leading to spontaneous pneumothorax. Long-term cough is a factor to promote the formation of emphysema; Frequent coughing can also cause vomiting, affect sleep and consume physical strength. Epidemiologically, cough can spread secretions containing pathogens. Causing the spread of disease.
Three, cold, adenovirus infection, nasal cavity, sinus or tonsillitis, acute and chronic pharyngitis or laryngitis, acute epiglottitis, laryngeal tuberculosis, acute and chronic tracheobronchitis, bronchiolitis, endobronchial tuberculosis, bronchiectasis, viral or bacterial pneumonia, mycoplasma, rickettsia or chlamydia pneumonia, pulmonary mycosis, lung abscess, tuberculosis, lung tumor, pleurisy, measles, whooping cough. Pulmonary echinococcosis, pulmonary amebiasis, acute schistosomiasis, ascariasis, hookworm disease, Pneumocystis carinii, mediastinal tumor or lymphadenopathy, retrosternal thyroid, esophageal cyst, diverticulum or cancer, hilar or bronchial lymph node tuberculosis, pulmonary cyst, pulmonary congestion or congestion, pneumoconiosis, diffuse pulmonary interstitial fibrosis, sarcoidosis, Wegener granuloma, radiation pneumonia, lung tumor, tuberculosis. Allergic rhinitis, bronchial asthma, exogenous allergic alveolitis, simple pulmonary eosinophilic infiltration, tropical eosinophilia, rheumatic pneumonia, angioneurotic edema, diaphragmatic hernia, subphrenic abscess, liver abscess (which can form bronchopleural fistula), leukemia, Hodgkin's disease, systemic lupus erythematosus, rheumatoid arthritis, scleroderma, polyarteritis nodosa, dermatomyositis, Sjogren's syndrome, etc.