Hepatitis C is a viral condition that causes inflammation of the liver. It develops after infection with the hepatitis C virus (HCV), a bloodborne pathogen that can damage liver tissue over time. Although the body’s immune system can sometimes clear HCV shortly after infection, many people develop chronic hepatitis C, which can gradually lead to scarring of the liver and other potentially serious health complications if left untreated.
Hepatitis C remains one of the most common causes of chronic liver disease worldwide. According to the World Health Organization (WHO), an estimated 50 million people are living with chronic hepatitis C globally, with approximately 1 million new infections occurring each year. In the United States, the Centers for Disease Control and Prevention (CDC) estimates that approximately 2.4 million people are living with the virus. Because the infection often causes few or no symptoms during its early stages, many people do not realize they are infected until routine blood work reveals abnormal liver function. Fortunately, advances in antiviral therapy now allow most people with hepatitis C to be cured, especially when diagnosed before significant liver damage occurs.
Quick Facts: Hepatitis C at a Glance
- What it is: A viral liver infection caused by the hepatitis C virus (HCV) that triggers inflammation and can silently progress to severe liver scarring (cirrhosis) or liver cancer.
- Main Causes: Spread exclusively through blood-to-blood contact, most commonly via shared injection drug equipment, unsterile tattoo/piercing equipment, occupational needlesticks, or receiving blood transfusions/organ transplants prior to 1992.
- Common Warning Signs: Often asymptomatic for years, but progressive symptoms include persistent fatigue, abdominal discomfort, jaundice (yellowing of the skin and eyes), dark urine, pale stools, nausea, and joint pain.
- Primary Risk Factors: Being born between 1945 and 1965, having a history of injection drug use or incarceration, receiving long-term hemodialysis, or having HIV.
- Treatment Options: Highly effective oral direct-acting antivirals (DAAs) can cure more than 95% of cases in 8 to 12 weeks with minimal side effects.
- Care at TGH: Specialized, comprehensive care through the TGH Transplant Institute, offering advanced diagnostics, antiviral therapy, and nationally recognized liver transplantation services.
Understanding Acute vs. Chronic Hepatitis C
Hepatitis C is generally categorized as acute or chronic, depending on how long the infection has been present. Disease severity is determined by the amount of liver inflammation and scarring rather than by the presence of symptoms alone. Some people experience little liver damage for decades, while others develop progressive fibrosis, cirrhosis, or liver failure more rapidly.
- Acute Hepatitis C: This refers to the first six months after infection with HCV. During this period, many people have no symptoms or develop only a mild flu-like illness. Unlike hepatitis B, spontaneous clearance of the virus occurs in only about 25% of infected individuals.
- Chronic Hepatitis C: Diagnosed when HCV infection persists for more than six months, which occurs in approximately 80% of untreated cases. Because it progresses slowly, an infected individual may feel healthy for decades while the virus continues to damage the liver.
Warning Signs and Symptoms
Most people with hepatitis C experience few or no symptoms during the early stages of infection. In many cases, the virus is discovered only after a routine blood test detects abnormal liver enzymes or an unrelated imaging study reveals liver damage.
Common Symptoms
As hepatitis C progresses and liver damage becomes more pronounced, symptoms typically develop gradually and may include:
- Fatigue and Aches: Persistent tiredness that interferes with daily activities, widespread muscle weakness, reduced exercise tolerance, and joint pain.
- Jaundice: Yellowing of the skin and eyes occurs when the liver can no longer effectively process and remove bilirubin, a yellow pigment produced during the breakdown of old red blood cells.
- Changes in Output: Excess bilirubin can cause urine to appear dark brown or tea-colored, while reduced bile production may result in pale or light-colored bowel movements.
- Digestive Issues: Loss of appetite leading to unintended weight loss, nausea, and an uncomfortable feeling of fullness or pain in the upper right abdomen.
- Skin Changes: Impaired liver function can contribute to persistent itching and easy bruising.
Uncommon and Extrahepatic Symptoms
Although hepatitis C primarily affects the liver, it can also produce extrahepatic manifestations (symptoms involving other organs). These include numbness or tingling in the hands or feet, dry eyes or dry mouth, kidney problems, joint swelling, and purple skin spots (purpura) caused by small blood vessel inflammation. Because these are not unique to hepatitis C, they may initially be mistaken for an autoimmune disease or arthritis.
Emergency Symptoms
An immediate medical evaluation is recommended for severe abdominal pain, increasing jaundice, mental confusion, vomiting blood, black stools, or sudden abdominal swelling, as these symptoms strongly indicate advanced liver disease or liver failure.
Causes, Transmission, and Risk Factors
Hepatitis C has one cause: HCV infection. Unlike other liver diseases, it is not inherited or related to alcohol consumption or poor nutrition. Transmission occurs exclusively when blood from an infected person enters the bloodstream of an uninfected person. It is not spread through casual contact, hugging, kissing, coughing, sharing food, or breastfeeding.
Sources of Transmission and Exposure
Common routes of transmission include:
- Injection Drug Use: Sharing needles, syringes, cookers, cotton, or rinse water is the most common source of new hepatitis C infections in the United States.
- Unsterile Equipment: Receiving tattoos or body piercings in unregulated settings with improperly sterilized equipment.
- Medical Exposures: Accidental needlestick injuries for health care professionals, or receiving blood transfusions and organ transplants before the routine screening of the U.S. blood supply began in 1992.
- Perinatal and Sexual Transmission: A mother can pass the virus to her baby during pregnancy or childbirth. Sexual transmission is less common but can occur, particularly among people with HIV or other sexually transmitted infections (STIs).
Risk Factors and Disease Accelerators
In the United States, the disease is diagnosed most frequently among adults born between 1945 and 1965. Rates are also higher among people with HIV, individuals receiving long-term hemodialysis, people with a history of incarceration, and those with hemophilia who received repeated clotting factor concentrates before modern screening. Several factors can accelerate liver injury once infected, including heavy alcohol consumption, coinfection with hepatitis B or HIV, older age at the time of infection, obesity, type 2 diabetes, and metabolic dysfunction-associated steatotic liver disease (MASLD).
How Hepatitis C Affects the Liver (Complications & Cancer Risk)
After entering the bloodstream, HCV travels to the liver, infects liver cells, and begins to replicate. In response, the body’s immune system attacks the infected cells, leading to chronic inflammation that slowly damages healthy liver tissue.
Progressive Complications
Over time, repeated cycles of inflammation and healing lead to a cascade of complications:
- Liver Fibrosis and Cirrhosis: Normal tissue is progressively replaced with scar tissue (fibrosis). As advanced scarring (cirrhosis) permanently alters the structure of the liver, it becomes less efficient at filtering toxins, producing blood-clotting proteins, processing medications, and producing bile.
- Portal Hypertension: Elevated pressure within the liver’s blood vessels may lead to enlarged veins in the esophagus or stomach, fluid accumulation in the abdomen, or an enlarged spleen.
- Hepatocellular Carcinoma: Chronic hepatitis C is a leading risk factor for primary liver cancer, particularly in people who have developed cirrhosis, though it occasionally occurs before cirrhosis is fully established.
- Liver Failure: Severe damage can completely impair the organ’s ability to remove toxins and regulate metabolism, becoming a life-threatening emergency.
Diagnosis and Long-Term Liver Monitoring
Because the infection often remains silent, the CDC recommends a one-time hepatitis C screening for all adults, screening during each pregnancy, and periodic testing for people with ongoing risk factors.
Diagnostic Testing
A diagnosis is confirmed through a positive hepatitis C antibody test (identifying prior exposure) followed by an HCV RNA test to detect an active virus in the bloodstream. Additional testing may include:
- Genotype Testing: Helps guide treatment planning in certain situations.
- Liver Function Tests: Measures ALT, AST, bilirubin, albumin, and clotting function.
- Comprehensive Panels: Complete blood counts (CBC) and metabolic panels provide information about platelet counts and kidney function.
Fibrosis and Liver Cancer Surveillance
Determining the extent of liver damage is an important part of hepatitis C management. Physicians utilize liver ultrasounds, elastography (FibroScan®) to estimate liver stiffness without surgery, and occasionally liver biopsies. Even after successful antiviral treatment, patients with cirrhosis or other high-risk features require routine liver cancer surveillance, involving liver ultrasounds every six months and alpha-fetoprotein (AFP) blood testing.
Treatment, Antiviral Medications, and Liver Transplant
The goals of hepatitis C treatment are to resolve the HCV infection, prevent further liver damage, reduce the risk of cirrhosis and liver cancer, and improve long-term health. Today, most people can be cured with direct-acting antiviral (DAA) medications.
Direct-Acting Antivirals (DAAs)
DAAs are highly effective, generally well-tolerated oral medications that cure more than 95% of patients in eight to 12 weeks by targeting specific steps in the HCV life cycle to stop the virus from multiplying. Common regimens include:
- Sofosbuvir/velpatasvir: A once-daily regimen effective against all major hepatitis C genotypes, typically prescribed for 12 weeks.
- Glecaprevir/pibrentasvir: Another pan-genotypic therapy that may allow some patients to complete treatment in as little as eight weeks.
- Ledipasvir/sofosbuvir: Used for select genotypes, particularly genotype 1.
- Sofosbuvir/velpatasvir/voxilaprevir: A three-drug regimen usually reserved for patients whose hepatitis C did not respond to previous DAA therapy.
Unlike older therapies, DAAs typically do not require injections and have much milder side effects, such as headache, fatigue, or nausea. A sustained virologic response (SVR)—meaning the virus is no longer detectable after treatment—is generally considered a cure. Before starting treatment, providers carefully review the patient's medications, as DAAs can interact with acid-reducing medications, heart medications, seizure medications, and HIV therapies.
Transplant Considerations for Advanced Disease
Liver transplantation may be considered if chronic hepatitis C has caused end-stage liver disease, liver failure, or liver cancer. Because hepatitis C is curable, antiviral therapy given before or after transplantation can prevent HCV from damaging the transplanted liver, significantly improving long-term outcomes.
Living With Hepatitis C and Prevention
A hepatitis C diagnosis can cause uncertainty, stress, or concern due to stigma and misconceptions about transmission. Talking with a health care provider or mental health professional can help patients develop healthy coping strategies. Household members do not need to take special precautions beyond avoiding the sharing of personal items that may come into contact with blood, and patients can safely continue working and attending school.
Lifestyle Modifications
While lifestyle changes cannot cure the virus, they are critical for protecting the liver. Patients must avoid alcohol completely, as drinking accelerates liver damage. It is also highly recommended to maintain a healthy weight, manage diabetes and cholesterol, stop smoking, eat a balanced diet, and receive vaccinations for hepatitis A and hepatitis B.
Preventing Reinfection
Because there is currently no vaccine for hepatitis C, achieving a cure does not prevent future reinfection if the patient is exposed again. Prevention requires never sharing personal items that may contain blood (razors, nail clippers, toothbrushes), using sterile single-use equipment for tattoos, practicing safer sex, and never sharing drug preparation supplies.
The TGH Difference for Hepatitis C
An early diagnosis and appropriate treatment can transform hepatitis C from a chronic viral infection into a curable illness for most people. Even so, specialized care remains important to evaluate liver health, determine the most appropriate antiviral therapy, and monitor for complications.
At Tampa General Hospital, the specialists in our Transplant Institute provide comprehensive care for patients with hepatitis C at every stage of the condition. Using advanced diagnostic tests, noninvasive liver fibrosis assessments, and the latest antiviral therapies, our multispecialty team develops individualized treatment plans designed to eliminate the hepatitis C virus while preserving long-term liver health.
For patients with cirrhosis, liver cancer, or end-stage liver disease, TGH offers coordinated care from hepatologists, transplant surgeons, infectious disease specialists, advanced practice providers, and other experts who work together to provide seamless care before, during, and after liver transplantation.