A 37-year-old African American man with a history of primary sclerosing cholangitis (PSC), autoimmune hepatitis (AIH), and ulcerative colitis (UC) presented to the emergency department with jaundice and fatigue. He was originally diagnosed with PSC on the basis of magnetic resonance cholangiopancreatography (MRCP) 8 years ago. He subsequently had increasing aspartate aminotransaminase (AST) and alanine aminotransferase (ALT) 1 year prior to his current presentation with ALT 145 U/L, AST 92 U/L, alkaline phosphatase (ALP) 245 U/L, and total bilirubin (TB) 2.0 mg/dL. A liver biopsy at that time showed moderate interface and lobular hepatitis, as well as focal areas of attenuated bile ducts and associated fibrosis consistent with a diagnosis of PSC/AIH overlap. He was started on prednisone and azathioprine (AZA), although he was inconsistent in taking these medications secondary to financial reasons. He was seen in clinic 1 month prior to the current visit and at that time laboratory results were AST 254 U/L, ALT 275 U/L, ALP 675 U/L, and TB 16.2 mg/dL. His AZA was resumed at a dosage of 75 mg/day, and his prednisone dose was increased.At the current visit, he described worsening jaundice, dark urine, fatigue, and pruritus. He also endorsed having one episode of nonbloody emesis but denied abdominal pain or diarrhea.He denied alcohol use or drug use. His outpatient medications at the time of the clinic visit included AZA 150 mg daily, losartan/hydrochlorothiazide 50/12.5 mg daily, mesalamine 1200 mg daily, prednisone 40 mg daily, omeprazole 40 mg daily, and ergocalciferol 50,000 units weekly. He denied taking any herbal medications or over-thecounter medications. He endorsed compliance with prednisone and AZA during the last month. He had increased