Dry Cough — Causes, Home Remedies & When to See a Doctor
A dry cough produces no mucus and often has a harsh, tickling quality. It can be triggered by a viral infection, allergies, air pollution, or acid reflux. While usually not serious, a persistent dry cough lasting more than 3 weeks always needs investigation.
Common Causes
- Post-viral irritation — most common cause after a cold or COVID
- Allergies or allergic rhinitis — dust, pollen, pet dander
- Air pollution — very common in Indian cities
- Acid reflux (GERD) — stomach acid irritating the throat
- ACE inhibitor medications — common side effect of some blood pressure drugs
- Asthma — dry cough especially at night
- Dry indoor air from air conditioning
- Throat irritation from smoke or dust
Home Care and Relief
Honey
Take 1–2 teaspoons of raw honey directly or in warm water before bed. Evidence shows honey is as effective as many cough syrups. Never give to infants under 12 months.
Steam inhalation
Inhale steam from a bowl of hot water with or without eucalyptus oil for 5–10 minutes, 2–3 times daily. Soothes irritated airways and reduces the urge to cough.
Ginger and honey tea
Simmer fresh ginger in water for 5 minutes. Add honey. Ginger’s anti-inflammatory properties ease throat irritation.
Turmeric milk (Haldi Doodh)
Warm milk with half a teaspoon of turmeric and a pinch of black pepper. Drink before bed. Curcumin soothes the airways.
Salt water gargling
Dissolve half a teaspoon of salt in warm water. Gargle for 30 seconds, 3–4 times daily. Reduces throat inflammation.
Elevate head while sleeping
Use an extra pillow. Reduces post-nasal drip and acid reflux that worsen coughing at night.
Avoid triggers
Reduce exposure to dust, smoke, perfumes, and pet dander. Use an air purifier if available.
When to See a Doctor
- Cough lasting more than 3 weeks
- Coughing up blood or rust-coloured mucus
- Chest pain or breathlessness alongside the cough
- Unexplained weight loss with persistent cough
- Night sweats with cough — possible TB
- Cough in a smoker — needs investigation
Related Guides
When home care is not enough: chest pain, trouble breathing, confusion, or symptoms that worsen quickly need urgent medical attention.