Hepatitis C

Overview

Hepatitis C is a viral infection that affects the liver. The liver is an essential organ that helps process nutrients, filter blood, and remove waste products from the body. When hepatitis C virus infects the liver, it can cause inflammation. In some people, the infection is short-term, but in many cases it becomes long-term, also called chronic hepatitis C.

Chronic hepatitis C may develop slowly over many years. Some people feel well and do not know they have it until a blood test is performed. If untreated, long-term infection can lead to liver scarring, known as fibrosis or cirrhosis, and may increase the risk of liver failure or liver cancer. With appropriate medical care, hepatitis C can usually be managed effectively, and modern treatments can often remove the virus from the body.

Symptoms

Many people with hepatitis C have no symptoms, especially in the early stages. When symptoms occur, they may be mild or easy to confuse with other conditions.

• Tiredness or low energy
• Loss of appetite
• Nausea or stomach discomfort
• Pain or discomfort in the upper right side of the abdomen
• Muscle or joint aches
• Dark urine
• Pale or clay-colored stools
• Yellowing of the skin or eyes, called jaundice
• Itching
• Easy bruising or bleeding in advanced liver disease
• Swelling in the abdomen or legs in advanced liver disease

Because symptoms may be absent for a long time, testing is important for people who may have been exposed to the virus or who have risk factors.

Causes and Risk Factors

Hepatitis C is caused by the hepatitis C virus. It spreads mainly through contact with infected blood. It is not spread through casual contact such as hugging, sharing food, coughing, or sneezing.

Possible routes of transmission include:

• Sharing needles, syringes, or other equipment used for injecting substances
• Receiving blood products or organ transplants in settings where screening was not available or was limited
• Use of non-sterile equipment for tattoos, piercings, or medical procedures
• Needlestick injuries in healthcare settings
• Sharing personal items that may have blood on them, such as razors or toothbrushes
• Transmission from a pregnant person to the baby during pregnancy or birth
• Sexual transmission, which is less common but may occur, especially when there is blood exposure or other infections

Risk factors vary by country, healthcare history, and personal circumstances. Anyone concerned about possible exposure should discuss testing with a healthcare professional.

Diagnosis

Hepatitis C is diagnosed with blood tests. A screening test checks whether a person has ever been exposed to the virus. If this test is positive, another blood test is needed to determine whether the virus is currently present in the body. This distinction is important because some people may have cleared a past infection, while others have an active infection that requires medical evaluation.

If active hepatitis C is confirmed, doctors may recommend additional tests to understand the condition of the liver and plan care. These may include blood tests to assess liver function, tests to identify the type of hepatitis C virus, and imaging or non-invasive liver stiffness measurements to evaluate scarring. In selected cases, further liver assessment may be needed.

Doctors may also check for other infections or conditions that can affect the liver, such as hepatitis B, hepatitis A immunity status, or alcohol-related and metabolic liver disease. This helps create a safer and more complete treatment plan.

Treatment Options

Treatment for hepatitis C has improved significantly. Most people with chronic hepatitis C are treated with oral antiviral medicines taken for a limited period under medical supervision. The choice and duration of treatment depend on factors such as the virus type, previous treatment history, liver condition, other medical problems, and possible interactions with other medicines.

During treatment, follow-up tests are used to check response and monitor liver health. Patients should tell their doctor about all prescription medicines, over-the-counter products, supplements, and herbal products they use, because some may affect treatment safety or effectiveness.

In addition to antiviral treatment, care may include measures to protect the liver. These may involve avoiding alcohol, maintaining a healthy weight, managing diabetes or high cholesterol if present, and receiving recommended vaccinations to help prevent other liver infections. People with advanced liver scarring need ongoing monitoring, even after the virus is cleared, because liver-related risks may remain.

In severe cases where liver damage is advanced, specialist care is essential. Some patients may need evaluation for complications of cirrhosis or, rarely, consideration of liver transplantation. Treatment decisions should always be made with a qualified healthcare team.

When to See a Doctor

See a doctor if you have ever had a possible blood exposure, have shared injecting equipment, received medical or cosmetic procedures with uncertain sterilization, or were told you have abnormal liver test results. Testing is also important if a past partner or household member has hepatitis C, or if you are pregnant and have risk factors.

Seek medical care promptly if you develop yellowing of the skin or eyes, severe abdominal swelling, vomiting blood, black stools, confusion, extreme drowsiness, or unusual bleeding or bruising. These may be signs of serious liver problems.

Hepatitis C is a medical condition that can often be treated successfully when identified and managed appropriately. If you are worried about exposure or liver health, a gastroenterology or liver specialist can guide you through testing, treatment options, and long-term follow-up.