Perianal fistulas(PAF)
Also known as: Perianal fistula · Perianalfistel · Canine perianal fistula · Analfistel · Perianalfisteln · …
Overview
What it is
Anal furunculosis is a chronic, painful inflammatory disease affecting the skin and deeper tissues surrounding the anus. It is caused by an overactive immune system that mistakenly attacks the dog's own tissues, leading to deep, pus-filled ulcerations and tunnels, known as fistulas, in the skin. This condition is most commonly seen in German Shepherd Dogs due to a complex genetic predisposition.
How it presents
Owners typically notice symptoms in middle-aged dogs, including straining or crying out during bowel movements, constant licking of the tail area, and a foul-smelling discharge or blood in the stool. You may also see open, painful sores around the anus.
Treatment
While the condition is rarely cured completely, it can be managed long-term with daily immunosuppressive medications or surgery. Lifelong management is typically required, with treatment costs ranging from €3,000 to €12,000 depending on the severity and response to therapy.
How it's tested
Affected breeds
2 of 2 breeds
Treatment cost
Estimated range of typical treatment cost. Actual cost depends on severity, clinic and region.
Frequently asked
What is Perianal fistulas?
Anal furunculosis is a chronic, painful inflammatory disease affecting the skin and deeper tissues surrounding the anus. It is caused by an overactive immune system that mistakenly attacks the dog's own tissues, leading to deep, pus-filled ulcerations and tunnels, known as fistulas, in the skin. This condition is most commonly seen in German Shepherd Dogs due to a complex genetic predisposition.
How is Perianal fistulas tested?
Various clinical and genetic tests are used depending on the breed and presentation.
Which breeds are most affected?
Most commonly affected: Irish Red Setter, German Shepherd.