Some major symptoms of cancer include coughing up blood with lung cancer, and blood in the stool is a symptom of colon cancer. Different cancers exhibit different symptoms. If unusual bodily changes occur, seek the advice of a medical professional right away, says the American Cancer Association.
Fever can sometimes be a symptom of leukemia or lymphoma. Fever is often present in patients whose cancer has spread from its point of origin. Generally, people undergoing cancer treatment will experience fever as the body becomes less effective in fighting infection.
Another cancer symptom is fatigue. Fatigue presents itself as extreme tiredness that doesn't go away, even with extended periods of rest. Fatigue can be a symptom of stomach or colon cancers or leukemia.
People battling cancer often experience weight loss, even when they are not trying to lose weight. Losing weight quickly, without trying, may be a sign of lung, esophagus, stomach or pancreatic cancers. It may also occur with leukemia.
Pain is another symptom of cancer such as in bone or testicular cancers, according to the American Cancer Association. Headaches that do not go away may be a sign of a brain tumor. However, pain is usually only present when the cancer has spread.