Chronic bronchitis in the elderly is a chronic, non-specific inflammation of the trachea, bronchial mucosa, and surrounding tissues. As people age, their respiratory defense mechanisms weaken, making them more susceptible to infections, which is why older adults are prone to developing chronic bronchitis. The symptoms of chronic bronchitis in the elderly can be divided into local and systemic symptoms. Local symptoms primarily involve the respiratory tract, including coughing, phlegm production, and sometimes wheezing, commonly referred to as "cough, phlegm, and wheezing." Systemic symptoms generally include fatigue, loss of appetite, and in some patients, dizziness, drowsiness, and lack of energy. If the patient has an accompanying infection, they may also experience fever and an exacerbation of coughing and phlegm production.