pain in the bum??

[partyanimal]

I know this should probably be in Health & Fitness but this is the site that most people seem to use.

Has anyone ever had that excruciating spasm-like pain in the rectum that lasts for about 10 or 15 seconds, and does anyone know the correct Medical term for it ?
I was diagnosed with an over active thyroid a couple of months ago and one of the symptoms was this pain and it used to last about half an hour.
There seem to be a lot of very knowledgeable people on here so I'm expecting great things from you, ( and of course the obligatory jokesters, Zorro, Ratter15, Bob the turkey & others)

[Pippa68]

*bites tongue for the last time today*