
Anal Furunculosis is thought to be an immune problem. It is most prevalent in GSD's. Cryosurgery does not always work. There are various drug treatments, but not every dog responds to those either. It's a terrible disease. My last GSD (Blue) developed AF at about 8yrs old. We were lucky enough to join a drugs trial at the Queen Mary Hospital for Animals in Potters Bar. Even being on the trial, over a 6 month period it cost us over £400.00. Blue had surgery, but the AF came back. The drug being trialled was Cyclosporin. We met all the other owners on the trial, and all bar one were GSD's. We were one of the lucky ones, the drugs worked for my girl, and over a period of 6mths we were able to reduce the amount (just as well, as they were costing us £180 per month) her insurance limited her to 12 months, so no help there. Eventually she came off them altogether and it never came back. I had the misfortune of meeting two owners with a wonderful 4 year old GSD who had tried everything, including Cyclorsporin but nothing had worked, and he was just being eaten away. They put him to sleep one day when I was there - it was tragic, and I was so upset (not as much as his poor owners were though) and I realised just how lucky we were that Blue had responded to the drugs.
If you haven't got a GSD it is not very likely to be AF (though not impossible), so don't worry too much. It might just be that the anal glands become impacted, and the surgery that they do for that is removal of the anal gland itself.
Hope this post doesn't sound too bleak, I just know quite a bit about AF, having been on the RCVS trial.
By the way, I have changed my user name to the above, in honour of my old departed GSD Blue, and the new GSD pup China.
Katrina Doble