Related Experiment Video
Updated: Aug 2, 2026

The CYP2D6 Animal Model: How to Induce Autoimmune Hepatitis in Mice
Published on: February 3, 2012
Encephalopathy associated with human herpesvirus 6 in a liver transplant recipient
D L Paterson1, N Singh, T Gayowski
1Veterans Affairs Medical Center, Pittsburgh, PA 15240, USA.
Abstract:
Recent reports have documented human herpesvirus 6 (HHV-6) as a cause of high fever, bone marrow depression, and rash in liver transplant recipients in the absence of another known pathogen. We describe a 49-year-old liver transplant recipient who developed confusion, occipital headache, and involuntary movements of the limbs 3 weeks after orthotopic liver transplantation. HHV-6 was detected in the peripheral blood using a rapid culture assay. Examination of cerebrospinal fluid by polymerase chain reaction for HHV-6 was also positive. No other pathogens were identified. The patient improved after commencement of intravenous ganciclovir therapy. This case suggests HHV-6 needs to be considered in the differential diagnosis of unexplained confusion in liver transplant recipients.
Insights
Human herpesvirus 6 (HHV-6) can cause neurological issues like confusion in liver transplant patients. Prompt diagnosis and ganciclovir treatment are key for recovery.
Area of Science:
- Virology
- Transplant Medicine
- Neurology
Background:
- Human herpesvirus 6 (HHV-6) is increasingly recognized as a pathogen in immunocompromised individuals.
- Previous reports link HHV-6 to fever, bone marrow suppression, and rash post-liver transplantation.
Observation:
- A 49-year-old liver transplant recipient presented with confusion, headache, and limb movements three weeks post-transplant.
- No other pathogens were identified in the patient's blood or cerebrospinal fluid.
Findings:
- HHV-6 was detected in the patient's peripheral blood and cerebrospinal fluid via polymerase chain reaction.
- The patient showed clinical improvement following intravenous ganciclovir therapy.
Implications:
- This case highlights HHV-6 as a potential cause of unexplained neurological symptoms in liver transplant recipients.
- Early consideration of HHV-6 in the differential diagnosis is crucial for timely management.
- Ganciclovir may be an effective treatment for HHV-6-associated neurological complications in transplant patients.
Related Concept Videos
Arboviral Encephalitis
Cytomegalovirus Disease
Encephalitis l: Introduction
Encephalitis ll: Pathophysiology
Viral Hepatitis I: Introduction
Hepatic Encephalopathy

