Common symptoms of colorectal cancer include:
A change in bowel habits
Diarrhea, constipation, or feeling that the bowel does not empty completely
Blood (either bright red or very dark) in the stool
Stools that are narrower than usual
General abdominal discomfort (frequent gas pains, bloating, fullness, and/or cramps)
Weight loss with no known reason
Constant tiredness
Nausea and vomiting
Most often, these symptoms are not due to cancer. Other health problems can cause the same symptoms. Anyone with these symptoms should see a doctor so that any problem can be diagnosed and treated as early as possible.
Usually, early cancer does not cause pain. It is important not to wait to feel pain before seeing a doctor.
Content Courtesy : www.cancer.gov

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