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Colorectal Cancer: Symptoms

Common symptoms of colorectal cancer can include:

  • Constant tiredness or fatigue
  • Feeling very tired all the time
  • Having nausea or vomiting
  • Losing weight with no known reason
  • Unexplained iron-deficiency anemia (low number of red blood cells)
  • A change in bowel habits
  • Diarrhea, constipation or feeling that the bowel does not empty completely
  • Stools that look narrower or thinner than normal
  • Bright red or very dark blood in the stool
  • Discomfort in the abdomen, including frequent gas pains, bloating, fullness and cramps

However, it is important to note that these may also be symptoms of less severe, more common conditions.

Last updated: 5/21/2010 4:19:49 PM