Research digest — not medical advice. Full disclaimer · How we rate evidence
Chronic Cough
A cough that persists for more than 8 weeks in adults.
Red Flags
If you experience these, seek immediate medical attention.
- •Coughing up blood (hemoptysis)
- •Unexplained weight loss
- •Shortness of breath or wheezing
- •Night sweats (possible TB or cancer)
- •History of smoking with new cough pattern
Overview
A chronic cough is not a disease itself but a symptom. The most common causes are postnasal drip, asthma, and acid reflux. In smokers, chronic bronchitis is common.
Possible Causes
Postnasal Drip
Mucus from sinuses draining into throat.
Asthma
Cough-variant asthma may present with cough only.
GERD
Acid reflux irritating the throat and airways.
COPD
Chronic obstructive lung disease, usually in smokers.
Home Care
- Stay hydrated.
- Use a humidifier.
- Honey in warm water (adults only).
- Avoid irritants like smoke and dust.
- Elevate head when sleeping if reflux suspected.
Research cited
Sources for this page are being compiled. Each research summary on Body Signals is backed by peer-reviewed literature — source links will be added as part of our ongoing editorial review.
Sidebar
When to see a doctor
- •Cough persists beyond 8 weeks.
- •Any blood in sputum.
- •Accompanied by fever or significant weight loss.
Want to discuss this symptom?
If this symptom is persistent or worsening, a virtual consultation can help you determine next steps without a long wait.
Find a healthcare providerQuick Facts
Medical Disclaimer
This is a research summary, not medical advice. Body Signals is an independent research digest — it summarises published research for informational purposes and is not a healthcare provider. Consult a qualified healthcare provider before making changes to diet, exercise, supplements, or medication — especially if you have existing conditions or take prescription drugs.