Dear friend, welcome to HCM!
This can not be due to tension !
When was the appendix
Is there abdominal pain
Was the stool cultured? did the problem start after the operation?
He needs careful evaluation and treatment accordingly.
There are many differentials. pl. wait for colonoscopy
findings to comment further.
Take care and please keep me informed of your progress.
I hope to have answered your query satisfactorily.