3 min read

Persistent Cough: Causes and How Telehealth Can Help

Disclaimer: This information is not a substitute for professional medical advice, diagnosis or treatment.

Clinically reviewed by Dr Madgalene (Peggy) Dubert – FRACGP
Bachelor of Medicine, Bachelor of Surgery
AHPRA: MED0000987224

A persistent cough, generally defined as a cough lasting longer than 3 weeks, can disrupt your sleep, affect your work, and in rare cases, may signal underlying health conditions. Understanding what’s normal, what’s not, and when to seek support is key.

What is a persistent cough?

A cough is your body’s natural reflex to clear irritants from your airways. However, when it lingers, it may fall into these categories:

Acute cough: Less than 3 weeks
Subacute cough: 3–8 weeks
Chronic (persistent) cough: More than 8 weeks

Common causes of a persistent cough

Post-viral cough

After a cold, flu or COVID-19, a dry cough can linger as your airways remain sensitive.

Asthma

Chronic coughing, especially worse at night or during exercise, can be a sign of a cough-variant asthma.

Allergies and post-nasal drip

Excess mucus dripping down the throat may trigger a persistent cough, often accompanied by a tickle in the throat.

Gastroesophageal reflux (GERD)

Acid reflux can irritate your throat and trigger chronic coughing.

Smoking or environmental irritants

Smoke, pollution, dust and chemicals can cause ongoing airway irritation

Medications

Some prescription medications, may cause chronic coughing

Symptoms that may accompany a persistent cough

Tickling or irritation in the throat
Phlegm or mucus production
Shortness of breath or wheezing
Chest discomfort
Night-time coughing
Fatigue due to interrupted sleep

When to see a doctor

While many persistent coughs are harmless, you should see medical advice if you experience:

Urgent symptoms:

Coughing up blood
Severe shortness of breath
Chest pain
High fever that won’t settle

Concerning signs:

Cough lasting longer than 3-4 weeks
Unexplained weight loss
Persistent hoarseness
Chronic cough in smokers or ex-smokers
Cough in children lasting more than 2-3 weeks

Early assessment can help detect conditions like asthma, chronic bronchitis, or less commonly, more serious illnesses.

What you can do at home

For mild or recovering coughs, these self-care strategies may help:

Stay hydrated – fluids help thin mucus and soothe irritation
Use honey (adults and children over 1) – can help reduce throat irritation
Avoid irritants – stay away from smoke, dust and strong fragrances
Elevate your head at night – helps reduce coughing caused by reflux or mucus drainage
Try steam or humidification – moist air can soothe irritated airways

Benefits of telehealth consults

Quick access to a GP – no waiting rooms, no need to get in the car, you can connect with an experienced GP from home.
Convenient health advice – your doctor can assess:
1. Duration and pattern of your cough
2. Associated symptoms
3. Potential triggers
4. Medical history
Treatment plans and prescriptions – if appropriate, telehealth GPs can:
1. Prescribe medications
2. Recommend over-the-counter remedies
Referrals and next steps – if your symptoms need further investigation, telehealth doctors can:
1. Refer you for imaging (e.g chest X-ray)
2. Arrange pathology tests
3. Direct you to in-person care when needed

When in-person care is better

Telehealth may not be suitable if you have:

Severe breathing difficulty
Chest pain
Signs of a serious infection
Need for a physical examination

Key takeaways

A persistent cough can be frustrating, but it’s often manageable once the cause is identified. Monitoring your symptoms and seeking timely advice is recommended.

Telehealth makes getting medical care easier than ever, helping you access trusted advice quickly, safely and from the comfort of your home.

Book an appointment online to speak with a doctor today.