Misconception #1 in Cold Treatment: Does a Baby’s Cough Always Require Cough Suppression?

Coughing results from inflammation, foreign bodies, or physical or chemical irritation of the tracheal, bronchial mucosa, or pleura. It begins with vocal cord closure, contraction of respiratory muscles, and increased intrapulmonary pressure, followed by vocal cord opening and forceful expulsion of air from the lungs—often accompanied by an audible sound. So, is it true that cough suppression is always necessary when infants develop a cough due to the common cold? Below, we address this misconception.

Misconception #1 in Common Cold Management: Must Infants’ Coughs Always Be Suppressed?

When infants develop a cough, parents often request antitussive medications from physicians—and frequently insist on combining multiple agents, including several traditional Chinese patent medicines. This practice is problematic. Persistent cough suppression impedes the clearance of viruses, bacteria, secretions, and necrotic tissue from the airways. If coughing ceases prematurely, these harmful substances remain trapped within the body, while excessive medication use poses significant risks to organ function—including hepatic and renal toxicity. Coughing is, in fact, the body’s natural defense mechanism against external pathogens (e.g., viruses or bacteria), facilitating their expulsion; thus, it represents an integral part of the disease process and supports recovery. That said, if coughing becomes excessively severe or distressing, judicious use of antitussives may be warranted to improve comfort. Moreover, sputum production is a normal physiological response to infection; when excessive, expectorants—not aggressive antitussives—should be employed. Notably, codeine-containing medications are strictly contraindicated in children due to their potential for addiction and should be avoided entirely.

Knowledge Extension: Causes of Nocturnal Cough

1. Bronchitis

Bronchitis arises from viral or bacterial infection of the bronchial mucosa. Typical symptoms include dry cough and excessive sputum production. Without timely treatment, sputum may become purulent and difficult to expel. Under medical guidance, appropriate pharmacotherapy can help alleviate these symptoms.

2. Lung Heat Syndrome

Lung heat typically develops following viral invasion and subsequent penetration of wind-cold pathogens into the body, gradually generating internal heat and toxic heat in the lungs—manifesting as productive cough. Similarly, lung dryness may also cause productive cough, commonly presenting as recurrent cough with yellowish sputum, constipation, dry mouth, and sore throat.

3. Environmental Changes

Fluctuations in temperature, humidity, atmospheric pressure, and airborne ion concentrations can trigger coughing—explaining its higher incidence during cold seasons or periods of seasonal transition (e.g., autumn to winter). Nocturnal cough often occurs because nighttime temperature drops facilitate invasion of cold-damp pathogens, irritating the trachea and respiratory tract. Therefore, particularly in winter, adequate thermal protection and minimizing diurnal temperature variation are essential preventive measures.

The above outlines Misconception #1 in common cold management: the erroneous belief that infant coughs must always be suppressed. We hope this information proves helpful.