Dry cough

A dry cough is an irritating cough that doesn’t produce mucus. It often feels like a tickle in the throat and can be caused by viral infections, allergies, asthma, smoke, or acid reflux. Common with colds, flu, or COVID-19, it can linger for weeks and may worsen at night or in dry, dusty environments. Get fast advice from an AHPRA-accredited GP within minutes for dry cough from anywhere in Australia, 24/7.

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When to consult a doctor for dry cough?

If your cough is ongoing or getting worse

Consult a doctor if your dry cough lasts longer than 3–4 weeks, becomes severe or persistent, or keeps worsening instead of improving.

If you have concerning symptoms along with the cough

Seek medical advice if your cough is accompanied by shortness of breath, chest pain, wheezing, fever, night sweats, unexplained weight loss, coughing up blood, or unusual mucus.

If dry cough affects your daily life

Consult a doctor if the cough is disturbing your sleep or daily activities, or if you have a history of asthma, heart disease, or chronic lung conditions that may be contributing to your symptoms.

This guide does not replace professional care. Consult a doctor to manage your symptoms. In emergencies, call 000. The content is research-backed & medically reviewed by Dr. Ammar AL-ANI, MBChB, CCBST, AMC

Causes

A dry cough can have many triggers, and understanding common dry cough causes helps identify what’s irritating the airways and when medical care may be needed.

Viral infections (such as colds or flu)
Allergies
Asthma
Acid reflux (GERD)
Post-nasal drip
Environmental irritants (smoke, dust, pollution, strong smells)
Certain medications (such as some blood pressure medicines)
Whooping cough (pertussis)
Chronic or underlying lung conditions

Types

Dry cough can have several underlying causes, and identifying the specific type can help guide appropriate treatment

Post-viral cough: Lingers for weeks after a cold, flu, or COVID-19 infection.
Allergic cough: Triggered by allergens like pollen, dust, pet dander, or mould, usually worse in certain environments.
Asthma-related cough: Often comes with wheezing, chest tightness, and breathlessness.
Reflux-related cough (GORD): Caused by stomach acid irritating the throat, often worse after meals or lying down.
Medication-induced cough: Common with certain medications, like the ones for blood pressure.
Chronic dry cough: Lasts more than 8 weeks, often linked to underlying conditions like asthma, post-nasal drip, or lung disease.

Prevention and treatment

Warm saltwater gargle: Soothes throat irritation and reduces coughing.
Honey in warm water or herbal tea: Natural anti-inflammatory and cough suppressant.
Steam inhalation: Loosens airway irritation and soothes dry throat.
Turmeric milk: Warm milk with turmeric can help reduce throat inflammation.
Ginger tea: Anti-inflammatory and antimicrobial properties may calm coughing.
Throat lozenges or herbal candies: Keep the throat moist and reduce tickling.
Elevating your head while sleeping: Reduces night-time coughing, especially with GORD.
Avoiding irritants: Keep away from smoke, dust, strong scents, and cold, dry air.
Stay well-hydrated: Warm fluids like broths, teas, and soups help soothe the throat.

While most dry coughs resolve on their own, if it lasts longer than 3–4 weeks or comes with other symptoms like shortness of breath, fever, or weight loss, it’s important to see a doctor.

Hola Health provides a fast and convenient way for you to see a doctor online in minutes, 24/7 across Australia. Much like an in-person GP clinic, our AHPRA-registered Australian online GP will conduct a comprehensive assessment to provide the best possible care, instantly.