Persistent cough

Colds, flu, allergies, and certain medications can cause coughing, and coughing can also be a side effect of some drugs. However, prolonged coughing (referring to coughing for more than three or four weeks) should not be ignored, especially for smokers, and medical attention should be sought. It may be a symptom of lung cancer, chronic bronchitis, or acid reflux.

Dysphagia

Some people feel difficulty swallowing but do not take it seriously, thinking that eating more liquid foods and drinking more soup will solve the problem. In fact, difficulty swallowing may be due to gastrointestinal tumors, such as esophageal cancer, and a doctor should be checked.

Skin changes

Everyone knows to be vigilant about cancer when a mole on the skin grows larger. But other changes on the skin should also be noted. For example, if there is sudden bleeding or excessive desquamation on the skin, medical attention should be sought. It is difficult to say how long skin changes may become problematic, but it is generally considered that attention should be paid if it exceeds a few weeks.

Oral changes

If you smoke, you should pay special attention to whether there are white spots or white spots on the tongue inside your mouth, as these changes indicate leukoplakia. This is a precancerous lesion that may progress to oral cancer. You should consult a doctor or dentist for treatment.

Urinary problems

Men often have urinary problems as they age, such as frequent urination, urgency, and incomplete urination. But when these symptoms are severe, one should consult a urologist to rule out prostate cancer or benign prostatic hyperplasia.

Indigestion

Many people, especially the elderly, believe that obvious indigestion is influenced by a heart attack. However, persistent indigestion may be caused by esophageal cancer or gastric cancer, and medical attention should be sought.