What causes coughing with white phlegm?

Generally, cough with white phlegm may be caused by environmental irritation, wind-cold感冒 (common cold due to wind and cold), rhinitis, bronchitis, or bronchial asthma. It is recommended to seek medical attention promptly, identify the underlying cause, and receive symptomatic treatment under the guidance of a healthcare professional. Specific causes are analyzed as follows:

1. Environmental irritation: Prolonged exposure to dry air or environments with high levels of dust may irritate the respiratory mucosa, leading to coughing and production of white sputum. It is advisable to improve living conditions, maintain fresh and humid indoor air, and avoid prolonged exposure to adverse environments.

2. Wind-cold感冒 (Wind-cold common cold): This type of common cold is caused by external invasion of wind and cold, with symptoms including cough, white phlegm, and fever. Patients are advised to take medications such as Fenghan Ganmao Granules, Jingfang Granules, or Waiguan Fenghan Granules as directed by a physician.

3. Rhinitis: Patients with rhinitis often produce excessive nasal secretions, which may drain into the throat and irritate it, causing cough and white phlegm. It is recommended that patients follow medical advice and use medications such as Rhinitis Tablets, Biyuan Tongqiao Granules, or Qianbai Rhinitis Tablets to alleviate symptoms.

4. Bronchitis: This condition may result from invasion by pathogens such as viruses or bacteria. Symptoms include cough and sputum production, with phlegm typically being white. Patients should strictly follow medical instructions and use medications such as Cefadroxil Capsules, Amoxicillin Capsules, or Roxithromycin Tablets to relieve symptoms.

5. Bronchial asthma: Bronchial asthma is a chronic inflammatory disease of the airways, possibly related to genetic factors or exposure to outdoor allergens. Symptoms include cough, wheezing, and chest tightness. During an asthma attack, increased airway secretions may lead to the formation of white phlegm. Patients are advised to use medications such as Doxofylline Tablets, Budesonide Inhalation Powder, or Beclomethasone Dipropionate Inhalation Aerosol under a doctor's supervision.

It is recommended to consume light and easily digestible foods such as porridge and noodles, and to avoid spicy, greasy, or other irritating foods that may worsen cough and sputum production.