Dry Cough
Dry Cough is one of the earliest signs of lung cancer. "Sometimes, in the periphery of the lung, a tumor can grow to a relatively large size before being diagnosed because it doesn't cause many symptoms", says Dr. However, if a tumor presses on one of the bronchi, the main airways that go to the lungs, it activates the cough receptors. "It can trigger a cough even when the tumor is relatively small if inserted in the right place", explains Dr. McKee.
However, cough is a very nonspecific symptom. When you cough, cancer isn't the first thing that comes to mind. Both the common cold and flu can last for a few weeks. Despite having sensitive lungs, it's not normal for a cough to persist even after a runny nose and other symptoms disappear. You don't have to worry about lung cancer in that situation if it's related to a viral illness.
One of the symptoms suggestive of lung cancer is a dry cough that lasts for more than 2-4 weeks, is not associated with an inflammatory airway condition, and does not respond to standard treatments– bronchi, other metastatic cancer squeezing the throat, larynx, and mediastinum. Hoarseness that persists is a sign of vocal cord dysfunction (due to injury to the vocal cords or the nerves that govern them), which can be a sign of laryngeal or glandular cancer armor.