Neurologic complications of hepatitis C

Area of Science:

• Neurology
• Infectious Diseases
• Hepatology

Background:

• Hepatitis C virus (HCV) infection is a prevalent chronic condition.
• HCV infection is associated with numerous extrahepatic manifestations.
• Neurologic complications are increasingly recognized in HCV patients.

Purpose of the Study:

• To review the spectrum of neurologic complications associated with Hepatitis C virus infection.
• To highlight the association between HCV, mixed cryoglobulinemia, and neurological disorders.
• To discuss potential pathophysiologic mechanisms and management strategies for HCV-related neurologic conditions.

Main Methods:

• Literature review of studies on HCV and neurologic complications.
• Analysis of reported cases of peripheral and central nervous system involvement in HCV.
• Synthesis of findings regarding specific neuropathies, stroke, and other neurological manifestations.

Main Results:

• The most common complication is sensorimotor polyneuropathy, often linked to mixed cryoglobulinemia (MC), for which HCV is the primary cause.
• In HCV patients without MC, mononeuropathy or mononeuropathy multiplex is more frequent.
• HCV infection is also associated with increased risk of ischemic and hemorrhagic strokes, transverse myelopathy, cognitive impairment, and encephalomyelitis, though some associations require further confirmation.

Conclusions:

• Hepatitis C virus infection should be considered in the differential diagnosis of various neurologic disorders.
• Further research is needed to fully elucidate the spectrum of neurologic complications, underlying mechanisms, and optimal management guidelines for HCV.
• Early diagnosis and treatment of HCV may help prevent or manage associated neurological conditions.