Know the signs and symptoms of lung diseases, lung cancer and heart disease
Everyone gets a cough now and then, but a cough that lasts for three weeks or more could be a sign of something more serious, such as COPD (chronic obstructive pulmonary disease), which is a form of lung disease.
A persistent cough might not be anything serious, but don't try and diagnose yourself, see your doctor to find out for sure.
A cough that has lasted three weeks or more can also be a sign of lung cancer, which is why it's so important to see your doctor. Early detection makes it easier to treat. Seeing your doctor could save your life.
A cough that has lasted three weeks or more is a key symptom of lung disease, including lung cancer, but other symptoms include:
If you have any of these symptoms, see your GP as soon as possible. If you know anyone who has any of these symptoms, insist they see their doctor.
Read more on NHS Choices