although kind of a late response, but i wanted to reply this insighful discussion to point out a similar occurance i have personally. i also suffer from the constant urge, discomfort and need to go. as a matter of fact, it has gotten to the point where it is negatively affecting other areas of my personal and profesional life---i.e., like focusing for an extended period of time, performance at work due to the need to spend so much time in the bathroom, and contsant worrying about havbing access to a bathroom while i am out on a vacation for example.
i have also visited my primary care doctor and a specialist and found nothing wrong-- other than external hemoroids near ,y rectum.
so, i write this to continue the diolgue and hopefully find some answers or guidance out there....