Is sputum produced during bronchitis or not? I found two contradictory information from the net. Please explain.
For either acute bronchitis or chronic bronchitis, signs and symptoms may include: Cough. Production of mucus (sputum), which can be clear, white, yellowish-gray or green in color — rarely, it may be streaked with blood. Fatigue
A productive asthmatic cough will expel phlegm and mucus from the lungs. In most cases of asthma, the cough is considered nonproductive. A nonproductive cough is a dry cough.