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Wilson disease (WD) is an autosomal recessive genetic disorder caused by mutations of ATP7B, a copper transporter, which results in impaired copper clearance. Its clinical manifestations are varied and can result in a mix of hepatic and neuropsychiatric symptoms. We present the case of a 26-year-old female with a past medical history of alcohol use who presented with right upper quadrant abdominal pain with associated vomiting, jaundice, and fatigue. She was found to have signs and symptoms of decompensated cirrhosis and was initially concerned about superimposed alcoholic hepatitis. With low ceruloplasmin and alkaline phosphatase, the suspicion for WD remained, and the patient underwent liver transplantation due to her worsening clinical status. The quantitative hepatic copper content of the explanted liver was elevated, and genetic testing confirmed the diagnosis of WD. Our case highlights the importance of including WD in the differential of a young patient with severe liver disease, and it highlights the utility of the phosphatidyl ethanol (PEth) test as a marker for chronic severe alcohol use. In patients with a significant alcohol use history, the diagnosis of WD should still be considered for those with reasonable clinical suspicion.

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