What are the causes of long-term coughing accompanied by phlegm?
Mar 24, 2025
Source: Cainiu Health
Dr. Ren Yi
Introduction
Under normal circumstances, possible causes of chronic cough with phlegm may include environmental factors, dietary irritation, chronic bronchitis, bronchiectasis, pulmonary tuberculosis, and so on. Symptomatic management through general treatments, medication, and other methods is usually required. In daily life, maintaining a healthy lifestyle and reducing exposure to irritants can help prevent the occurrence of this symptom.
Generally, long-term coughing accompanied by phlegm production may be caused by environmental factors, dietary irritation, chronic bronchitis, bronchiectasis, pulmonary tuberculosis, and other conditions. Symptomatic treatment through general care and medication is usually required. If physical discomfort occurs, prompt medical consultation and treatment are recommended. Detailed analysis is as follows:
1. Environmental Factors
Dust, pollen, and irritating gases in the environment can stimulate the throat mucosa, leading to increased mucus secretion, which in turn causes coughing and phlegm production. Symptoms may include throat discomfort, dryness, or a foreign body sensation. It is recommended to improve the living environment, reduce exposure to dust and pollen, and wear a mask to minimize inhalation of irritating gases.
2. Dietary Irritation
Long-term consumption of spicy or irritating foods can cause congestion and swelling of the oral and throat mucosa, increasing secretions and resulting in coughing and phlegm production. Symptoms may also include dryness of the oral mucosa and throat pain. It is recommended to adjust dietary habits, avoid spicy and irritating foods, increase water intake, and maintain moisture in the throat mucosa.
3. Chronic Bronchitis
Chronic bronchitis is associated with long-term inhalation of harmful gases, smoke, dust, or infections, leading to thickening of the airway mucosa, glandular hyperplasia, and increased mucus secretion. Patients often experience persistent coughing with large amounts of yellow-green or white phlegm, and may also have symptoms such as shortness of breath, chest tightness, and difficulty breathing. It is recommended to follow medical advice and use medications such as amoxicillin capsules, cefixime dispersible tablets, and ambroxol hydrochloride oral solution to alleviate symptoms.
4. Bronchiectasis
Bronchiectasis is related to congenital factors, recurrent infections, or immune deficiencies. These factors cause structural damage to the bronchial walls, loss of normal elasticity, and susceptibility to dilation and deformation. Patients commonly experience recurrent episodes of coughing with large amounts of purulent phlegm, and may also have symptoms such as fever, weight loss, and hemoptysis. It is recommended to follow medical guidance and use medications such as ceftriaxone sodium injection, azithromycin dispersible tablets, and ampicillin capsules for treatment.
5. Pulmonary Tuberculosis
Pulmonary tuberculosis is caused by infection with Mycobacterium tuberculosis. After invading the lungs, the bacteria trigger an inflammatory response, forming granulomas that lead to lung tissue damage and necrosis. Patients often experience long-term coughing with large amounts of white or yellow phlegm, sometimes accompanied by blood streaks. It is recommended to follow medical instructions and use medications such as isoniazid tablets, rifampicin capsules, and pyrazinamide tablets to alleviate symptoms.
In daily life, maintaining a healthy lifestyle and minimizing exposure to irritants can help prevent the occurrence of this symptom.
References
[1] Wang Hua. When "Chronic Bronchitis" Affects Diabetic Patients [J]. Diabetes Friends, 2025, (03): 68-69.
[2] Lai Yunjiao. Be Alert to COPD [N]. Gansu Science and Technology News, 2024-12-02 (007).
