Menu Healthy Lifestyle Diseases & Conditions First Aid Symptoms Tests & Procedures Videos Definitions FAQs Hepatitis CUpdated: 2017-06-13OverviewHepatitis C is a viral infection that attacks the liver. The virus is spread by contact with contaminated blood, for example, from sharing needles or from unsterile tattoo equipment.SymptomsMost people have no symptoms, only learning they're infected years later when liver damage is discovered.TreatmentsHepatitis C is treated with antiviral medications. © 1998-2022 Mayo Foundation for Medical Education and Research(MFMER). All rights reserved. Terms of Use