Pain can be a result of numerous conditions, but ongoing pain which is unexplained and lasts a month or longer can signal bone, brain, or other cancers. Ask your doctor about any suspicious prolonged and unexplained pain.
This is probably one of the most mundane and diverse symptoms on the list. There are a ton of different reasons that people cough, and more often than not they are trivial and temporary in nature. It’s when the cough persists over the course of weeks that someone should voice concern.
If you find yourself in pain or short of breath during a cough it could be serious. If you cough up blood, it is serious. Smokers should pay particular attention to coughing, as it’s the most typical sign of lung cancer.