We all get coughs sometimes. It could be due to a cold, allergy, or pollution. But what if the cough doesn't go away even after weeks?

In some cases, a persistent cough could be an early sign of lung cancer – especially if it comes with other warning symptoms.

Here’s what you need to know, explained by Dr. MSS Keerthi, a senior lung cancer surgeon in Secunderabad, Hyderabad.

When Is a Cough Not Just a Cough?

A normal cough from flu or infection usually gets better in a few days. But if you have a dry or wet cough that lasts for more than 3 weeks, you must get it evaluated – especially if:

• The cough is worse at night or early morning
  
  

• There’s blood in the mucus
  
  

• You feel short of breath
  
  

• You experience chest pain while coughing
  
  

• You have unexplained weight loss or constant tiredness
  
  

These symptoms could be signs of something more serious, including lung cancer.

Why Does Lung Cancer Cause a Persistent Cough?

Lung cancer develops in the cells of the lungs. In the early stages, symptoms are mild. But as the tumour grows, it can:

• Irritate the airways and trigger constant coughing
  
  

• Block air passages
  
  

• Cause bleeding inside the lungs
  
  

• Press on surrounding nerves or chest wall
  
  

This is why cough is often one of the first symptoms people experience.

Who Is at Higher Risk of Lung Cancer?

Lung cancer is more common in:

• Smokers (including passive smokers)
  
  

• People exposed to air pollution or industrial chemicals
  
  

• Those with a family history of lung cancer
  
  

• Patients with chronic lung conditions like COPD or asthma
  
  

• Individuals with no symptoms but long-term unexplained cough
  
  

Even non-smokers can develop lung cancer, especially in polluted urban environments.

How Is Lung Cancer Diagnosed?

If your cough is not going away, your doctor may suggest:

• Chest X-ray or CT scan
  
  

• Sputum test to check for cancer cells
  
  

• Bronchoscopy – a test to view inside the airways
  
  

• Biopsy – to confirm the type and stage of cancer
  
  

Dr. MSS Keerthi, a highly skilled lung cancer specialist in Hyderabad, uses advanced techniques like video-assisted thoracoscopic surgery (VATS) and robotic lung surgery for accurate diagnosis and treatment.

What Are the Treatment Options?

Treatment depends on the type, location, and stage of cancer. Options include:

• Surgery to remove the tumour
  
  

• Chemotherapy
  
  

• Radiation therapy
  
  

• Targeted therapy
  
  

• Robotic or minimally invasive lung surgery for faster recovery and less pain
  
  

Dr. MSS Keerthi is a renowned surgical oncologist in Hyderabad, offering personalised treatment plans using the latest technology.

Why Choose Dr. MSS Keerthi?

• Over 17 years of surgical oncology experience
  
  

• Performed 4,000+ cancer surgeries
  
  

• Expert in lung, breast, oral, stomach, and colon cancers
  
  

• Specialises in robotic and laparoscopic cancer surgeries
  
  

• Practices at Evoke Clinic, Kompally, Secunderabad – a trusted centre for lung cancer treatment in Hyderabad
  
  

• Known for ethical care, patient support, and accurate diagnosis
  
  

Final Thoughts

Not every cough is cancer – but constant coughing should never be ignored. Lung cancer is treatable if detected early. So if you or a loved one has a cough that lingers beyond 2–3 weeks, don't wait.

Book a consultation with Dr. MSS Keerthi – the best cancer specialist in Hyderabad – and get clarity with the right investigations and advice.

Your lungs speak through symptoms. Don’t ignore them. Act early. Stay safe.