Colon Cancer Alliance

What is Colorectal Cancer and How Can It Be Prevented?

Symptoms of Colorectal Cancer

Colorectal cancer first develops with few, if any, symptoms. However, if symptoms are present, they may include:

Having diarrhea or constipation
Feeling that your bowel does not empty completely
Finding blood (either bright red or very dark) in your stool
Finding your stools are narrower than usual
Frequently having gas pains or cramps, or feeling full or bloated
Losing weight with no known reason
Feeling very tired all the time
Having nausea or vomiting

These symptoms can also be associated with many other health conditions. If you have any of these symptoms, discuss them with your doctor. Only your doctor can determine why you're having these symptoms. Usually, early cancer does not cause pain. It is important not to wait to feel pain before seeing a doctor.

Learn more: Diagnosis

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