Predominant signs of lung cancer include a cough that gets worse or doesn't improve, wheezing, weight loss, chest pain and coughing up blood, according to the American Cancer Society. Other common symptoms are hoarseness, weakness, shortness of breath and persistent infections, such as pneumonia and bronchitis, that return after treatment.
Lung cancer that spreads to other areas of the body causes additional symptoms, notes the American Cancer Society. If cancer is in the liver, the skin and eyes may jaundice and turn yellow. Lung cancer that spreads into the bones may cause bone pain. Lumps at the top of the skin may indicate the lung cancer has spread to the lymph nodes or skin. If cancer spreads to the brain or spinal column, someone with lung cancer may report headaches, dizziness, balance problems, numbness in one or more extremity, or other nervous system changes.
Because symptoms of lung cancer may not present until the disease is in its later stages, it is important to see a doctor when any symptoms occur, according to Healthline. The U.S. Preventive Services Task Force recommends that people who are at high risk for lung cancer undergo a low-dose computed tomography scan to check for the disease. People who are at high risk have a history of smoking within the past 15 years, are between the ages of 55 to 79, and have smoked 30 packs or more per year.