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Chronic Cough After a Cold: What Causes It?

  • Apr 13, 2025

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During the rainy season, frequent weather changes inevitably lead to more cases of the common cold or upper respiratory infections. A common issue after recovery is a persistent cough that disrupts daily life. Let’s explore the causes and self-care strategies for this condition.

What Is a Post-Cold Cough?
A post-infectious cough occurs after an upper respiratory infection (URI) caused by viruses (e.g., influenza, rhinovirus, RSV) or bacteria. Most patients recover from initial symptoms like fever, body aches, and sore throat within 2 weeks, but the cough lingers for weeks longer, even with normal lung X-rays.

Why Does a Cough Persist After a Cold?
This is likely due to ongoing inflammation of the respiratory tract lining, leading to:

  • Bronchial hyperresponsiveness (heightened airway sensitivity to irritants).

  • Postnasal drip (mucus trickling down the throat), causing throat irritation and frequent coughing.

How Is a Post-Cold Cough Treated?

  • Avoid triggers: Spicy foods, cold drinks, and overusing the voice.

  • Stay warm and rest.

  • Most cases resolve on their own within 2 months.

  • For severe cases, doctors may prescribe:

    • Inhaled corticosteroids to reduce airway inflammation.

    • Short-term oral steroids.

    • Cough suppressants for disruptive coughing.

    • Antihistamines to manage postnasal drip.

    • Saline nasal rinses to clear mucus.

    • Treatment for underlying conditions like acid reflux or sinusitis.

Self-Care to Prevent Chronic Post-Cold Cough

  • Exercise regularly.

  • Get adequate sleep.

  • Quit smoking.

  • Get an annual flu vaccine.

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