However, persistent pain that has no clear explanation, repeatedly returns, or progressively becomes worse deserves medical attention.
Depending on the type and location of cancer, pain may occur when a tumor affects surrounding tissues, organs, or nerves.
Rather than assuming that a particular type of pain means cancer, consider its duration, progression, location, and whether other symptoms are present.
7. Changes in Bowel Habits
Your bowel habits can change because of diet, stress, infections, medications, constipation, or other digestive problems.
But a persistent change should be evaluated, particularly when it involves:
- Long-lasting constipation
- Persistent diarrhea
- Blood in the stool
- A noticeable change in stool appearance
- A continuing feeling that the bowel has not completely emptied
These symptoms can have many causes, but persistent changes—especially unexplained bleeding—should be discussed with a doctor.
8. Blood in the Urine
Blood in the urine can occur for several reasons, including urinary infections, kidney stones, prostate problems, and other conditions.
In some cases, however, it can also be associated with cancers affecting the urinary system.
Even if the bleeding happens only once or occurs without pain, it is important to have the cause evaluated rather than simply ignoring it.
9. A Persistent Cough
A cough is usually caused by something other than cancer.
