But doctor?

what kind of doctor do you walk to to see about your but?But doctor?
This would be a proctologist. You can read more something like the field here
http://en.wikipedia.org/wiki/proctologis...
Your best bet though is to see your regular doctor, as it's possible that doesn`t matter what is bothering you, your regular doctor may be able to treat. If not, next he/she would refer you to a proctologist.
Proctologist, and i don't want to know the rest of the story.
You might want to start with a domestic practice doctor who can decide where on earth to send you.
General surgeons give the impression of being to do most of the work on things such as hemorrhoids, anal fissures, and perirectal abscesses.
Some array of GI doctor would be good for diagnosing problems next to the colon and rectum.
Someone with a Ph.D. within English.
Depends on what is wrong with it.