GG,
They had to do an exam under GA to confirm a fistula tract had formed, and then proceeded with the necessary medical procedure to open the fistula, etc while I was under anesthesia. They decided to to this because of the fact that 5 weeks after the original abscess had been drained, I developed another small one (same spot) which indicated that there was a fistula.... in other words- the outside skin had healed over the opening from the draining, but there was still infection on the inside (from an open fistula) that was now trapped bc of the healed skin (which = another abscess). I hope that makes sense! Lol If there had NOT been a fistula, chances are I would've healed up after the draining of the abscess and would not have had a recurring one and constant drainage of goop (I wouldn't call is puss bc it was so minimal).
In order to determine that there is a fistula, they have to do a lot of poking around down there which would be painful to the patient. So they kill two birds with one stone. They put you out under GA (general anesthesia), do whatever determining procedures they need to do (scopes, use dye in some cases, etc.) and one they can see if there is a fistula, how long it is, where it's located, etc., they'll go ahead and fix it while you're still out. Some people need a drain (called a seton), or other things done. I was super lucky and had minimal work done- they didn't even have to cut any muscle! *phew*
I hope this helps! Feel free to ask my anything! I can definitely share as much about my experience as possible to try and help.