The common causes of white sputum are bronchitis, pharyngitis, lung tumors and so on.
1. Bronchitis: acute or chronic non-specific inflammation of bronchial mucosa occurs under the stimulation of pathogenic microorganisms, physical and chemical factors, and patients may have symptoms of coughing and coughing up white sputum.
2. Pharyngitis: under the long-term stimulation of pathogenic microorganisms, chemical factors, environment and other factors, acute and chronic inflammation of pharyngeal mucosa can occur, with clinical manifestations of pharyngeal discomfort, such as dry pharynx, sore pharynx, coughing, dry heaving, etc., and often in the morning, the feeling of pharyngeal phlegm, coughing up a large amount of white sputum.
3. Lung tumor: when lung tumor presses on trachea, bronchus and alveoli, it will increase the secretion of sputum, which is often manifested as irritating cough, coughing up a large amount of white sputum with blood in the sputum, and invasion of pleura may also cause chest pain.
The presence of white sputum may also be associated with other diseases, and timely consultation is needed to determine the cause of the disease and choose the appropriate treatment program.