title: Right upper-quadrant pain in a patient with drug abuse, secondary syphilis and occult hepatitis B virus.
abstract: OBJECTIVE
  To describe the etiology of hepatitis and identify occult hepatitis B virus (HBV) infection.
  
  
  METHODS
  A 40-year-old man presented with severe abdominal pain and jaundice, a history of acute HBV infection that had cleared as well as the use of acetaminophen, methamphetamine, buprenorphine and marijuana. He admitted to having had unprotected sex with multiple partners of both genders. A thorough skin examination revealed papulosquamous lesions on his penis, scrotum, upper and lower extremities and feet. Transaminases and bilirubin were elevated. His rapid plasma reagin was reactive, and hepatitis serologies showed occult HBV. Liver biopsy showed severe hepatitis, but the stains for hepatitis B surface antigen and hepatitis B core antigen were negative. The pathological findings were highly indicative of drug-induced hepatitis without evidence of chronic hepatitis, reactivation of HBV or syphilitic hepatitis. With supportive management and abstinence from drugs, his condition improved.
  
  
  CONCLUSIONS
  This case describes a patient with multiple potential causes for hepatitis and highlights the importance of obtaining a detailed social history. Further, one should consider the presence of occult HBV and recognize the serologic pattern.
authors.affiliation: Department of Internal Medicine, University of Kentucky, Lexington, Ky., USA.
authors.forename: Cory M
authors.initials: CM
authors.lastname: Fielding
authors.forename: Paul
authors.initials: P
authors.lastname: Angulo
mesh_terms: D015746:Abdominal Pain / Q000209:etiology*; D000328:Adult; D006509:Hepatitis B / Q000150:complications* / Q000175:diagnosis / Q000628:therapy; D006801:Humans; D008297:Male; D019966:Substance-Related Disorders / Q000150:complications*; D013587:Syphilis / Q000150:complications* / Q000175:diagnosis / Q000628:therapy