The short answer
Lung cancer often causes no symptoms early on. When symptoms appear, they can include a lasting cough, coughing up blood, chest pain, shortness of breath, and unexplained weight loss.
Lung cancer often causes no symptoms in its early stages.
A cough that does not go away or gets worse is a common sign.
Coughing up blood should always be checked promptly.
Other signs include chest pain, shortness of breath, hoarseness, and weight loss.
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The full explanation.
The simple version
Lung cancer often causes no symptoms in its early stages, which is part of why it can be hard to catch early. When symptoms do appear, a lasting cough is one of the most common. Screening can find some lung cancers before symptoms start.
Common signs
Possible signs and symptoms include:
- A cough that does not go away or gets worse
- Coughing up blood or rust-colored spit
- Chest pain, often worse with breathing or coughing
- Shortness of breath, wheezing, or hoarseness
- Repeated lung infections and unexplained weight loss
What to check promptly
Coughing up blood should always be checked right away. A cough that lasts more than a few weeks, or new shortness of breath, should also be evaluated.
Early lung cancer often has no symptoms, so screening matters for people at higher risk.
When to see a doctor
Many of these symptoms have other causes, from infections to asthma. Still, see a doctor for a lasting or worsening cough, coughing up blood, or unexplained weight loss — and ask whether you qualify for lung cancer screening.
Words to know
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Common questions
▸What are common symptoms?
Possible signs include a cough that does not go away or worsens, coughing up blood, chest pain, shortness of breath, hoarseness, wheezing, repeated lung infections, and unexplained weight loss.
▸Does early lung cancer cause symptoms?
Often not. Lung cancer may cause no symptoms early on, which is why screening is recommended for some people at higher risk.
▸What should always be checked?
Coughing up blood should always be checked promptly. A cough that lasts more than a few weeks or gets worse should also be evaluated.
▸Who should consider lung cancer screening?
Screening with a low-dose CT scan is recommended for some adults with a history of heavy smoking. Ask your doctor whether you qualify.
Questions to ask your doctor
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