Understanding What Causes A Cough

Key Information:

• The Common Culprit: The vast majority of short-term coughs are caused by viral infections, such as the common cold or flu. The cough is simply your body’s way of clearing out mucus and inflammation.
• Persistent Coughs: If a cough lasts longer, we look for other causes. For example, asthma (often worse at night or after exercise), acid reflux (worse after eating), or postnasal drip.
• COPD: In patients who smoke or have smoked, a persistent cough can be a sign of Chronic Obstructive Pulmonary Disease (COPD).
• Bacterial vs. Viral: While most coughs are viral and resolve on their own, bacterial infections like pneumonia are less common but more serious and may require antibiotics.