11. Persistent Cough or Hoarseness
A cough lasting more than three weeks, coughing up blood, or ongoing hoarseness can be signs of lung, throat, or laryngeal cancer. These symptoms are not always caused by cancer, but they should be checked by a doctor.
12. Unusual Bleeding or Discharge
Unexplained bleeding—such as blood in the stool or urine, unusual vaginal bleeding, coughing up blood, or nipple discharge—should always be evaluated. Although these symptoms often have non-cancerous causes, they can also be early warning signs of cancer.
