Cough lasting more than 3 weeks
A cough lasting more than three weeks is considered chronic and warrants investigation. While it may follow a respiratory infection (post-infectious cough), it can also indicate conditions like asthma, reflux, or more serious lung disease. Identifying the cause is important because chronic cough significantly affects quality of life.
Conditions that commonly cause cough lasting more than 3 weeks
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Common Causes of Cough lasting more than 3 weeks
- Post-nasal drip from allergies or sinusitis
- Asthma (cough-variant asthma)
- Gastro-oesophageal reflux disease (GERD)
- ACE inhibitor medication
- Chronic bronchitis or COPD
When to Seek Urgent Medical Care for Cough lasting more than 3 weeks
These signs may indicate a serious problem — don't wait, seek medical care right away:
- See a doctor if a cough lasts more than 3 weeks, produces blood or discoloured phlegm, is accompanied by weight loss, night sweats, breathlessness, or fever.
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