Snapshot A 39-year-old man with inflammatory bowel disease presents to his primary care physician due to concern of anal discharge. He reports that he has been compliant with his inflammatory bowel disease medications and has an upcoming appointment with a surgeon for drainage of a perianal abscess. On exam, an abnormal communication to the perianal skin is visualized. Introduction Clinical definition login to view 5 more bullets Associated conditions login to view 3 more bullets etiology Pathogenesis login to view 9 more bullets Presentation Symptoms login to view 4 more bullets Physical exam login to view 2 more bullets Studies Diagnostic testing login to view 3 more bullets Differential Pilonidal cyst login to view 2 more bullets Hidradenitis suppurativa login to view 2 more bullets Treatment Fistulotomy Infliximab for Crohn disease-associated fistula Complications Persistent fistula