Cough that won't go away: causes and when to see a doctor
By My Wellness Health, Editorial team · Reviewed by the My Wellness Health clinical team on 7 Oct 2026 · Updated 7 Oct 2026
A cough lasting more than three weeks has many causes, including infections, asthma, smoking and TB. It can also be a sign of lung cancer, especially in smokers. See a clinician if it lasts more than three weeks or you cough up blood.
| How urgent | What a clinician will check | How we help | Fee |
|---|---|---|---|
| See a clinician if it lasts more than three weeks or you cough up blood. | A clinical review; a chest X-ray or TB test may follow. | Cancer risk assessment | Cancer risk assessments, KES 300 |
Cough that won't go away: common questions
Frequently asked questions
What can cause cough that won't go away?
A cough lasting more than three weeks has many causes, including infections, asthma, smoking and TB. It can also be a sign of lung cancer, especially in smokers.
When should I see a doctor?
See a clinician if it lasts more than three weeks or you cough up blood.
What will the doctor check?
A clinical review; a chest X-ray or TB test may follow.
Does cough that won't go away mean I have cancer?
Usually not, but it is worth getting checked so a clinician can find the cause. Only an examination and tests can tell.
How can My Wellness Health help?
My Wellness Health's cancer risk assessment (Cancer risk assessments, KES 300) looks at your symptoms, history and lifestyle and gives you a personalised risk report with clear next steps. A care navigator calls you back within 2 hours to help you book any screening you need at a facility that suits your budget and location. Assessment fees do not include tests or consultations at the facility.
This page is health information to help you understand risks and next steps. It is not a diagnosis and does not replace a consultation with a qualified clinician. My Wellness Health is not a diagnostic service: we help you understand your risk and connect you with the right screening and care. In an emergency, go to the nearest hospital or call 999 or 112. If you are thinking of harming yourself, call Befrienders Kenya on +254 722 178 177 or the Kenya Red Cross toll-free line 1199.