Overview
A cough that outlasts a usual viral illness deserves a proper look. Common reasons include allergy, post-nasal drip, acid reflux and airway sensitivity after an infection.
Identifying the pattern — when it worsens, what precedes it — usually points to the cause more reliably than any single test.
Symptoms people notice
- Dry or productive cough lasting over three weeks
- Sneezing and a blocked or runny nose
- Throat irritation or frequent throat clearing
- Wheeze or tightness in the chest
- Symptoms worse at night or on waking
Causes and risk factors
- Dust, pollen, mould and pet allergens
- Air pollution and smoke exposure
- Post-nasal drip from sinus congestion
- Acid reflux irritating the throat
- Airway sensitivity following a viral infection
When to seek help
Do not wait on these
- Coughing blood
- Breathlessness at rest or on mild activity
- High fever with chest pain
- Weight loss with a long-standing cough
- Cough persisting beyond eight weeks
Lifestyle and daily guidance
- 1Identify and reduce exposure to your main trigger
- 2Keep bedding clean and the sleeping area dust-free
- 3Use steam inhalation for congestion
- 4Stay hydrated to keep secretions loose
- 5Avoid smoke entirely, including second-hand smoke
Frequently asked questions
Often not. Most persistent coughs are not bacterial, and antibiotics will not help allergy or reflux-related cough. The cause should guide the treatment.
Yes. Allergies can appear at any age, sometimes after a change of city, home or work environment.
Disclaimer: The information on this website is for general education only and is not a diagnosis, prescription or a substitute for professional medical advice. Always consult a qualified practitioner about your individual health concern.