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. 2015 Jun 22;32(5):568–577. doi: 10.1093/fampra/cmv048

Colorectal cancer: symptoms

Did you notice any blood in your bowel motions?
Did you notice whether this was dark blood?
Did you notice any change in your bowel habits, for example diarrhoea alternating with constipation?
Did you notice a strong feeling of the need to empty your bowels, without being able to do so or only passing minimal amounts of stool?
Did you have a sudden feeling of an urgent desire to empty your bowels?
Did you feel that you had not emptied your bowels completely?
Did you notice that you were passing frequent, very loose bowel motions (diarrhoea)?
Did you lose any weight unintentionally?
How long did you have your symptoms?
Did your symptoms progress quickly from when you first noticed them?
Did you notice any abnormal, yellowish discolouration in your eyes or skin (jaundice)?