What are the symptoms of lung cancer?
Symptoms of lung cancer can vary and include respiratory issues such as an ongoing cough, breathing changes or lung infections, and symptoms outside of the lungs such as tiredness or loss of appetite. But sometimes, early-stage lung cancer doesn’t cause any symptoms.
Lung cancer is one of the most frequently diagnosed cancer types each year. However, the number of cases has been decreasing, partly due to fewer people smoking and early detection through lung cancer screening. If you have a high risk of lung cancer, early screening can give you peace of mind and detect signs of lung cancer before you have any symptoms.
Early symptoms of lung cancer
Some people with early stages of lung cancer will experience symptoms that are similar to other common lung conditions. Unlike a cold or respiratory infection, lung cancer symptoms will persist. However, early lung cancer doesn’t always cause symptoms and signs of the condition may only be found through a screening.
When you catch lung cancer early, you have better lung cancer treatment options. That’s why it’s important to listen to what your body tells you and to speak to your medical provider about any persistent symptoms.
Lingering cough
It’s common to have a cough from a minor respiratory illness. However, pay attention if you have a cough that lasts more than a week or two, especially if you have risk factors for lung cancer, such as smoking. Visit your doctor if your lingering cough worsens or you experience other symptoms like hoarseness or coughing up blood.
Non-small cell lung cancer symptoms
Non-small cell lung cancer (NSCLC) is the most common form of lung cancer and causes different signs and symptoms in people. NSCLC grows slowly; not everyone will show signs of this type of lung cancer in the early stages. As cancer spreads, non-small cell lung cancer symptoms can also affect the brain, liver and bones.
Common symptoms of this type of lung cancer include:
- Persistent cough
- Blood in saliva
- Breathing or voice changes
- Poor appetite and unintentional weight loss
- Fatigue and weakness
- Frequent infections, such as bronchitis or pneumonia
- Chest pain
Small-cell lung cancer symptoms
Small-cell lung cancer (SCLC) grows faster than non-small cell lung cancer (NCLC). However, it may not cause symptoms early on and can vary from person to person. As SCLC spreads in the lungs or to other parts of the body, you may have advanced-stage symptoms, such as bone pain, headache or lumps in your neck.
Some common symptoms of SCLC include:
- Ongoing cough
- Coughing up bloody mucus
- Breathing changes or wheezing
- Hoarseness
- Chest pain that increases with laughing or coughing
- Poor appetite and unintentional weight loss
- Fatigue and weakness
- Frequent infections, such as bronchitis or pneumonia
- Swelling of the neck or face
Metastatic lung cancer symptoms
When lung cancer spreads to other areas of the body away from the original tumor, it’s called metastatic lung cancer. At this point, it is in the most advanced lung cancer stages and may lead to symptoms throughout the body.
Lung cancer often spreads to the bones, liver and brain. These new tumors or cancerous cells outside the original lung cancer location are known as secondary cancer.
- If lung cancer spreads and causes secondary bone cancer, symptoms include chronic bone and joint pain, pain that radiates down your legs or arms, or bone fractures.
- If the liver is affected, secondary liver cancer symptoms include yellowing of the skin and eyes, nausea, swelling or a feeling of fullness in the abdomen.
- Lung cancer that spreads to the brain or spinal cord causes secondary brain cancer symptoms, such as headaches, seizures, vision changes, speech changes and memory or balance problems.

















