5- Nagging Cough
Coughing is a very common health issue during the cold and flu season. However, if it remains prolonged, it can be the sign of cancerous conditions like thyroid cancer, lung cancer, laryngeal, or lymphoma. This is a very common symptom that many cancer patients experience before and during the diagnosis of the disease.
6- Difficulty in swallowing
Although this may be due to some other reason, but if you consistently find it hard to swallow food, then this might be a sign of the cancer of the throat, stomach or the esophagus.