In smokers, symptoms of lung cancer may be more difficult to notice than in nonsmokers. Smokers are used to coughing, having shortness of breath at times, and being susceptible to viral or respiratory infections. Lung cancer does not usually show symptoms in its early stages, according to the Mayo Clinic. This makes it even harder to notice, except that smokers may be able to perceive differences in their reactions to smoking that are actually symptoms.
Coughing
There could be a change in the character of the cough for smokers, or they may develop a chronic cough, according to the Merck Manuals Online Medical Library. The cough may be more persistent than usual. It could also feel and sound harsher, different from the so-called "smoker's cough." If the cough does not go away after three weeks, see a doctor as soon as possible, advises the National Health Service of England.
Coughing Up Blood
Coughing up blood, even small amounts, should trigger a warning to seek medical help immediately. This is one of the significant symptoms of lung cancer, especially if the smoker is over age 40.
Breathing Difficulties
Wheezing, shortness of breath, hoarseness and chest pain could be an indication that a lung is damaged. Tumors in the lung can block an airway that can lead to breathing problems, coughing, fever, chest pain and pneumonia. There may be fluid from the cancerous cells between the lung and chest causing shortness of breath. A persistent pain the chest may be an indication that cancer has spread to the bone. Frequent bouts with bronchitis or pneumonia may be signs of lung cancer.
Fatigue
Many smokers feel tired more often because of their habit. But there may be a noticeable difference in feeling more weak and tired than usual. The fatigue may seem excessive. When cancer cells begin to spread, they can move into other organs. Lung cancer may spread into the heart or chest area, which leads to the blockage of blood flow through the heart. This may cause the extreme tiredness.
Weight Loss
Losing weight without trying or any changes in the diet is a sign to see a doctor. Lung cancer symptoms often show up later in the disease, and sometimes that can be too late for a cure. A smoker has a much higher risk of getting lung cancer, so if there are any signs, such as sudden loss of weight for no reason, the person should get a medical examination.
