Coughing with yellow phlegm in adults is usually caused by a respiratory infection. It is recommended to relieve symptoms with antibiotic treatment and maintaining adequate hydration. The appearance of yellow phlegm is often associated with bacterial infection; respiratory inflammation causes a change in the color of the phlegm.
1. Bacterial infection is a common cause of yellow sputum. Respiratory infections such as bronchitis and pneumonia can cause sputum to turn yellow because enzymes released after white blood cells fight bacteria change the color of the sputum. For bacterial infections, doctors often prescribe antibiotics such as amoxicillin, cephalosporins, or macrolides, which need to be taken according to the prescribed course of treatment.
2. Viral infections can also cause yellow sputum. Although viral infections primarily result in clear sputum, secondary bacterial infections can cause the sputum to turn yellow. Treatment mainly involves antiviral drugs, such as oseltamivir, while also requiring rest and vitamin C supplementation to boost immunity.
3. Sputum may also be yellow during acute exacerbations of chronic respiratory diseases such as chronic bronchitis or asthma. These diseases require long-term management, using inhaled corticosteroids such as budesonide, or bronchodilators such as salmeterol.
4. Environmental factors such as air pollution or smoking can irritate the respiratory tract, leading to increased and yellowish phlegm. Improving air quality, quitting smoking, or using an air purifier can help reduce symptoms.
5. Dietary adjustments can also help relieve coughs with yellow phlegm. Drinking plenty of warm water or honey water can thin the phlegm, and eating lung-moistening foods such as pears and lilies can help reduce coughs.
Adults with cough and yellow phlegm should seek medical attention promptly to determine the cause and receive appropriate treatment. At the same time, they should pay attention to daily care and dietary adjustments to promote recovery and prevent recurrence.