The combination of diarrhea as well as constipation is certainly suggested of IBS.
However, before settling on that disease, a
colonoscopy is not a bad idea to exclude other causes (i.e. inflammatory bowel disease). Another consideration if cost is an issue would be a flexible sigmoidoscopy - which doesn't quite go as far as a colonoscopy, and may be a less expensive procedure.
Repeating the stool cultures to ensure that the Giardia is eradicated can be considered as well.
These options can be discussed with your personal physician.
Followup with your personal physician is essential.
This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.
Kevin, M.D.
kevinmd_b
I have an 18 year old son and I would tell him the same thing.
Please let us know how you are doing!
God Bless!