Old sputum may be caused by bronchial dilatation, bronchitis, chronic pharyngitis, tuberculosis and so on.
1. Bronchial dilatation: patients with old sputum may be caused by bronchitis, repeated infections or non-infectious factors leading to irreversible expansion of the bronchi and bronchioles, the patient will have a chronic cough, coughing up a large amount of pus sputum and repeated hemoptysis symptoms.
2. Bronchitis: when affected by smoking, air pollution, cold air, allergies and other factors, resulting in inflammation of the trachea, bronchial mucosa and the surrounding tissues, the patient’s main manifestations are coughing, coughing up sputum, nasal congestion, sore throat and other symptoms.
3. Chronic pharyngitis: if the pharyngeal mucosa, submucosa and lymphatic tissue of diffuse chronic inflammation, patients will appear old phlegm phenomenon, mainly associated with nasopharyngeal diseases, bad habits, occupational factors, resulting in patients with dry and itchy throat, coughing, pharyngeal foreign body sensation and other symptoms.
4. Tuberculosis: the disease is mainly caused by tuberculosis bacillus, mainly through the respiratory tract for transmission, common symptoms include coughing up phlegm, cough, loss of appetite and other symptoms.
There may be phlegm due to other causes, such as lung tumors, left heart failure, reflux esophagitis and other diseases, it is recommended that patients go to the hospital in a timely manner, under the diagnosis of the doctor, according to the patient’s specific condition performance, targeted treatment.