Sputum that is thick and clear and can be stretched can be caused by lung infections, chronic airway diseases and lung cancer.
1. Lung infections, including bacterial infections, fungal infections and tuberculosis mycobacteria infections and other special types of infections. Infection can damage the mucous membrane of trachea and bronchus, leading to increased secretion, and when it cannot be coughed up in time, the sputum is thick and stringy.
2. Chronic airway diseases, such as chronic obstructive pulmonary disease (COPD), asthma, bronchiectasis, etc., cause poor ventilation due to obstruction of the airways. At the same time, the secretion, i.e. sputum, increases and becomes thicker, making it difficult to cough up.
3. Lung cancer, which can lead to increased sputum production and viscous, can not be completely discharged, resulting in viscous transparent can be pulled performance.
It is recommended to consult a doctor in time for lung X-ray, blood test, lung function test, etc., in order to clarify the specific cause of the disease.