Cough
Most coughs clear within three weeks. The ones that don't need investigation.
Acute coughs (under 3 weeks) are usually viral and self-limiting. Subacute (3–8 weeks) and chronic (over 8 weeks) coughs deserve medical review — especially if you're a smoker, have unexplained weight loss, or are coughing up blood.
When to worry
Seek urgent medical care for any of the following:
- Coughing up blood
- Shortness of breath or chest pain
- Cough lasting more than 3 weeks
- High fever that doesn't break
- Unintended weight loss or night sweats
- Wheezing that's new or worsening
Safe self-care
Reasonable first steps while you wait for or decide on a consultation:
- Warm fluids — honey and lemon in warm water for soothing
- Humidifier or steam from a hot shower
- Elevate your head at night
- Avoid smoking and smoky environments
- Over-the-counter cough suppressant for dry cough at bedtime
Which specialist treats cough?
Cough — FAQ
How long is too long for a cough?
Any cough lasting longer than three weeks should be reviewed by a doctor — especially if you smoke or have other symptoms.
Can a doctor prescribe cough medicine online?
Yes. After a video consultation, a GP can issue a digital prescription for prescription-strength cough medicine, inhalers, or antibiotics if indicated.
Other symptoms
This page is general information, not medical advice for any specific person. If in doubt, book a consultation or seek emergency care.