Major Warning Signs You Have Lung Cancer

11. Shortness of Breath or Wheezing

Experiencing persistent shortness of breath, even with minimal exertion, is a key warning sign. A tumor can block airways, making it difficult for air to move in and out of the lungs. It can also cause fluid buildup around the lungs (pleural effusion) or damage to the air sacs, reducing lung capacity. Wheezing, a whistling sound during breathing, can occur if a tumor narrows an airway. If you find yourself frequently gasping for air, easily winded, or develop new, unexplained wheezing, consult a doctor immediately. This indicates your respiratory function is compromised and requires urgent assessment.

12. Clubbing of Fingers and Toes

This less common but highly specific symptom involves changes to the fingers and toes. "Clubbing" manifests as a softening of the nail beds, where the skin around the nail appears shiny, and the nails curve downward, resembling the round part of a spoon. The tips of the fingers or toes may also become enlarged. This occurs due to reduced oxygen in the blood, which can be caused by lung conditions like cancer. While it can also be linked to other heart or lung issues, new-onset clubbing should trigger an immediate medical evaluation for lung cancer, especially if accompanied by any other respiratory symptoms.