Abnormalities in hepatic function have become one of the most common complications occurring among human immunodeficiency virus (HIV)-infected individuals receiving highly active antiretroviral therapy (HAART), and liver disease has become an increasingly important cause of morbidity and mortality in HIV-infected patients. We present a case of a patient with HIV infection and hepatotoxicity that exemplifies the complications currently observed during the treatment of such patients. Hepatotoxicity can be a result of several factors, including a direct effect of HAART, substance abuse, and coinfection with either hepatitis C virus (HCV) or hepatitis B virus. Imaging studies may be helpful in determining the etiology; however, a liver biopsy is often necessary to be able to more accurately determine the relative contributions of different processes. Although coinfection with HCV and HIV has become a common clinical problem, optimal treatment of such patients remains to be defined and must be individualized to maximize benefit and tolerance.