Hi there -
Occasionally after the gallbladder is removed a patient will have lingering bouts of
diarrhea for some reason (probably a reflex response). However, the blood and
itching do suggest
hemorrhoids, but the only way to be certain of this is to have a thorough exam which would probably include a
colonoscopy. While everything sounds relatively innocent, age is no guarantee against cancer, and guessing it's something simple is cold comfort if the guess turns out to be wrong. Again, I feel pretty certain this is being caused by internal
hemorrhoids and if I were willing to guess at my own good health I'd say leave it there, but if it were me I wouldn't, so I certainly won't suggest that to you. Instead, I'd say go for the definite rule-out. You'll feel a lot better in any case.
Best of luck to you with this. Please keep us updated.