AI Summary An estimated 700,000 to 1.4 million Americans live with chronic hepatitis B and about 2.4 million live with chronic hepatitis C; among people with cirrhosis from any cause, 1-8% develop liver cancer each year.
Medically reviewed.
Viral Hepatitis is a group of liver infections caused by five different viruses — hepatitis A, B, C, D, and E. Your liver filters toxins, stores energy, and makes proteins your body needs; these viruses inflame liver tissue and can disrupt those jobs. Infection may be acute, lasting weeks to months, or chronic, lasting years, and some types cause no symptoms even while damaging the liver.
This page compares the five types, their symptoms, incubation periods, and how they spread, and explains which types can become chronic, the complications chronic infection can cause, how doctors test for each, and how treatment works. Explore the dedicated page for each type, and use our directory to find a liver specialist for testing or care.
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Symptoms by Type
Symptoms often overlap between types and with other causes of liver inflammation. Many people with hepatitis B or C have no symptoms for years, so testing — not symptoms — is the most reliable way to find out if you're infected.
| Type | Common symptoms | Incubation period |
|---|---|---|
| Hepatitis A | Fatigue, nausea, loss of appetite, dark urine, pale stool, jaundice, abdominal discomfort | 15 to 50 days |
| Hepatitis B | Fatigue, jaundice, dark urine, pale stool, nausea, abdominal pain; chronic infection often causes no symptoms until advanced liver damage | 60 to 150 days |
| Hepatitis C | Often no symptoms; when present, fatigue, jaundice, dark urine, abdominal pain, nausea | 6 to 9 weeks |
| Hepatitis D | Fatigue, nausea, vomiting, low-grade fever, joint pain, dark urine, jaundice | 14 to 180 days |
| Hepatitis E | Often mild or absent, especially in children; abdominal pain, fever, jaundice, nausea, loss of appetite | 3 to 8 weeks (about 40 days average) |
Yellowing of the skin and eyes, along with dark urine and pale stools, is the most common visible sign of acute hepatitis of any type. Contact a doctor if these appear.
Acute vs. Chronic Infection
Some types of viral hepatitis almost always resolve on their own, while others can persist for years and quietly damage the liver.
Complications
Left untreated, chronic viral hepatitis can lead to serious complications.
Cirrhosis from any cause, including chronic viral hepatitis, raises the risk of liver cancer (hepatocellular carcinoma). Regular monitoring lets a specialist catch complications early, when they're most treatable.
Doctors diagnose viral hepatitis with blood tests. Hepatitis A and E are confirmed with IgM and IgG antibody tests. Hepatitis B testing checks for the surface antigen (HBsAg, sometimes called the Australia antigen) and related antibodies to tell a new infection from an old or resolved one; people with chronic hepatitis B also get periodic liver function tests, albumin, and prothrombin time to watch for liver damage. Hepatitis C testing starts with an antibody screen (anti-HCV); antibodies can take up to 3 months to become detectable, so a positive result is confirmed with an HCV RNA (PCR) test that shows whether the virus is currently active, and genotyping can guide treatment choice. Hepatitis D testing checks for anti-HDV antibodies and, if positive, HDV RNA. The CDC recommends a one-time hepatitis C screening for all adults ages 18 to 79, and anyone with risk factors for hepatitis B should also be tested.
Explore viral hepatitis testingTreatment depends on the type of hepatitis. Hepatitis A and E usually need only supportive care, such as rest and avoiding alcohol, while the immune system clears the virus; there is no specific antiviral treatment for either. Chronic hepatitis B is managed with antiviral drugs — PEG-interferon, which stimulates the immune system, or nucleoside/nucleotide analogues, which suppress the virus — that slow liver damage, though they do not eliminate the virus; mild chronic hepatitis B is often not treated at all. Hepatitis C is now curable in most people: direct-acting antivirals can achieve sustained virologic response (cure) in roughly 90% or more of people treated, typically within 8 to 24 weeks, though a cure does not reverse liver damage that occurred before treatment. Hepatitis D has no dedicated cure; interferon can push the virus into remission but does not clear it, and management focuses on controlling the underlying hepatitis B infection. For fulminant (rapid, severe) hepatitis D, liver transplant can be an effective treatment.
See liver therapiesEach type of viral hepatitis spreads differently, so the precautions that lower your risk depend on the type.
Vaccination against hepatitis A and B, safe injection practices, safe sex, and good hygiene around food and water are the most effective ways to lower your risk across all five types.
Diet does not cure or prevent viral hepatitis, but it supports the liver while it heals or manages a chronic infection. Avoiding alcohol is especially important, since alcohol adds to the liver damage that hepatitis viruses already cause. A liver-friendly diet emphasizes fruits, vegetables, lean protein such as fish and poultry, and whole grains, uses healthy unsaturated fats like olive oil instead of saturated or trans fats, and limits added sugar, sodium, and processed foods. People with cirrhosis or fluid retention may need to reduce sodium further; a doctor or dietitian can tailor recommendations to the stage of liver disease.
Amsety Bars were designed for liver patients by liver health experts. They are low in sodium, gluten-free, and free of refined sugar, so they can work as a snack or meal replacement when a full meal is not possible. Check with your doctor or dietitian about how they fit your diet.
Explore Liver Health Nutrition Bars
Medical disclaimer: LiverDirectory provides educational information and a directory of providers. It does not provide medical advice, diagnosis, or treatment. Always consult a licensed physician regarding any medical condition.
