Causes
Chronic hepatitis is primarily caused by specific viruses, autoimmune reactions, or metabolic factors that lead to ongoing liver inflammation and damage.- Chronic Viral Hepatitis (Most Common):
- Hepatitis B Virus (HBV): Can persist in the body, leading to chronic infection. Transmitted through blood, semen, and other body fluids.
- Hepatitis C Virus (HCV): A common cause of chronic hepatitis worldwide. Transmitted primarily through blood-to-blood contact.
- Hepatitis D Virus (HDV): Only occurs in people who are also infected with Hepatitis B. Can worsen chronic HBV infection.
- Autoimmune Hepatitis:
- The body's immune system mistakenly attacks healthy liver cells, causing inflammation.
- More common in women and often associated with other autoimmune diseases.
- Non-Alcoholic Steatohepatitis (NASH):
- A severe form of non-alcoholic fatty liver disease (NAFLD), where fat accumulation in the liver leads to inflammation and liver cell damage.
- Strongly associated with obesity, Type 2 diabetes, high cholesterol, and metabolic syndrome. Can progress to cirrhosis.
- Alcoholic Hepatitis:
- Chronic and excessive alcohol consumption directly damages liver cells, leading to inflammation. This can progress to alcoholic cirrhosis.
- Genetic (Inherited) Diseases:
- Hemochromatosis: Excessive iron accumulation in the liver.
- Wilson's Disease: Excessive copper accumulation in the liver.
- Alpha-1 Antitrypsin Deficiency: A genetic disorder that can cause liver and lung disease.
- Drug-Induced Chronic Hepatitis:
- Certain medications, when taken long-term, can cause chronic liver inflammation in susceptible individuals (e.g., amiodarone, methotrexate, isoniazid, some herbal remedies).
Symptoms
Many people with chronic hepatitis, especially in the early stages, experience no symptoms. When symptoms do appear, they are often non-specific or indicate more advanced liver disease.- Fatigue: Persistent and often debilitating tiredness.
- Nausea and Vomiting.
- Loss of Appetite.
- Unexplained Weight Loss.
- Mild Abdominal Pain: Often in the upper right quadrant (where the liver is located).
- Joint Pain.
- Muscle Aches.
- Low-Grade Fever.
- Skin Rash.
- As Symptoms Progress (indicating more severe liver damage/cirrhosis):
- Jaundice: Yellowing of the skin and eyes, dark urine.
- Itching (Pruritus).
- Ascites: Fluid accumulation in the abdomen.
- Edema: Swelling in the legs and ankles.
- Easy Bruising and Bleeding.
- Spider Angiomas: Small, spider-like blood vessels on the skin.
- Hepatic Encephalopathy: Confusion, memory problems, personality changes, asterixis ("flapping tremor").
Diagnosis
Diagnosing chronic hepatitis involves a combination of medical history, physical examination, blood tests, and often imaging and liver biopsy to determine the cause and extent of liver damage.- Medical History and Physical Exam: The doctor will inquire about risk factors (e.g., alcohol use, travel history, medication use, exposure to viruses) and symptoms. The exam may reveal an enlarged liver or spleen.
- Blood Tests:
- Liver Function Tests (LFTs): Elevated AST and ALT (liver enzymes) often indicate liver inflammation. High bilirubin and low albumin suggest impaired liver function.
- Viral Markers: Specific blood tests for Hepatitis B (HBsAg, anti-HBc, HBeAg) and Hepatitis C (anti-HCV, HCV RNA) to identify chronic viral infections.
- Autoimmune Markers: Anti-nuclear antibody (ANA), anti-smooth muscle antibody (ASMA), anti-liver kidney microsomal type 1 (LKM-1) antibodies for autoimmune hepatitis.
- Genetic/Metabolic Tests: Iron studies (hemochromatosis), ceruloplasmin/copper levels (Wilson's disease), alpha-1 antitrypsin levels.
- Imaging Tests:
- Abdominal Ultrasound: Can assess liver size, texture, and detect fatty liver or signs of cirrhosis.
- CT Scan (Computed Tomography) or MRI (Magnetic Resonance Imaging): Provide more detailed images of the liver and can identify cirrhosis, tumors, or other abnormalities.
- Transient Elastography (FibroScan): A non-invasive test that measures liver stiffness, indicating the degree of fibrosis (scarring).
- Liver Biopsy:
- Often considered the gold standard to confirm the diagnosis, determine the cause, assess the severity of inflammation, and stage the level of fibrosis or cirrhosis.
- A small piece of liver tissue is removed with a needle and examined under a microscope.
Treatment
Treatment for chronic hepatitis aims to eliminate the cause (if possible), reduce inflammation, prevent further liver damage, and manage complications. Treatment plans are highly dependent on the underlying cause.- Treating the Underlying Cause:
- Antiviral Medications:
- For Chronic Hepatitis B: (e.g., tenofovir, entecavir) Help suppress viral replication and reduce liver damage.
- For Chronic Hepatitis C: Direct-acting antiviral (DAA) medications. Highly effective (often over 95% cure rate) in eradicating the virus.
- Immunosuppressants: (e.g., prednisone, azathioprine) For autoimmune hepatitis to suppress the immune system's attack on the liver.
- Weight Loss and Lifestyle Changes: For NASH (diet, exercise).
- Alcohol Abstinence: For alcoholic hepatitis.
- Chelation Therapy: To remove excess iron (hemochromatosis) or copper (Wilson's disease).
- Antiviral Medications:
- Managing Complications (if cirrhosis has developed):
- Diuretics for ascites.
- Lactulose/Rifaximin for hepatic encephalopathy.
- Beta-blockers or endoscopic banding for varices.
- Regular screening for liver cancer.
- Supportive Care:
- Nutritional Support: Maintaining a healthy diet, addressing vitamin deficiencies.
- Avoid Liver Toxins: Abstain from alcohol, avoid unnecessary medications that are metabolized by the liver.
- Vaccinations: Get vaccinated against Hepatitis A and B (if not already infected), and influenza, pneumonia.
- Liver Transplantation:
- Considered for individuals with end-stage liver disease (decompensated cirrhosis) when other treatments are no longer effective.
Living With Chronic Hepatitis
The two viral forms behave very differently once found: hepatitis C is now cured with a short course of tablets, while hepatitis B is controlled for life. What follows is the practical side of each.
Hepatitis C: cure is the expectation
Every adult should be tested once, and anyone with a risk factor more often; our one-time hepatitis C screening article explains why the recommendation is universal. A positive antibody is followed by an RNA test, because a quarter of people clear the virus on their own. Treatment with sofosbuvir-velpatasvir or glecaprevir-pibrentasvir runs eight to twelve weeks with few side effects, cures well over ninety percent, and no longer requires a specialist or a biopsy first. A blood test three months after finishing confirms the cure.
Hepatitis B: suppression, and the danger of stopping
Not everyone with hepatitis B needs medication; the decision rests on viral load, liver enzymes, and fibrosis, and people who are not yet treated are rechecked every six to twelve months. When treatment such as entecavir is started it is usually lifelong, and stopping it without a plan can trigger a severe flare. Household members and sexual partners are tested and vaccinated. Anyone with past or current hepatitis B must say so before chemotherapy, prednisone, methotrexate, or a biologic, because those drugs can reactivate a dormant infection unless preventive antiviral treatment is given first.
What a compromised liver cannot afford
Alcohol accelerates every form of chronic hepatitis, and none is safe once fibrosis is present; our alcohol guide and the alcohol use disorder page cover getting help. Acetaminophen remains the safest pain reliever at a reduced daily maximum agreed with your clinician, while NSAIDs such as ibuprofen are avoided in advanced disease because of bleeding and kidney risk. Several herbal and bodybuilding supplements have caused liver injury, so every supplement is reviewed; our supplement interactions article lists the worst offenders. Excess weight adds fatty liver disease on top of the viral injury.
Vaccines and surveillance
Hepatitis A and B vaccination, annual influenza and current pneumococcal vaccines are standard, which our adult vaccine checklist covers. Once cirrhosis is present, and in some people with hepatitis B before it, liver cancer surveillance by ultrasound every six months begins and continues even after hepatitis C is cured, because the scarred liver keeps its risk. Endoscopy checks for esophageal varices when portal hypertension is suspected.
The signs that cannot wait
Vomiting blood or passing black stools, new confusion or excessive sleepiness, a rapidly swelling abdomen, or fever with abdominal pain in someone with cirrhosis needs emergency care the same day. Our gastrointestinal team manages screening, treatment, and surveillance with hepatology. The NIDDK hepatitis C and hepatitis B pages publish patient guidance on testing and treatment.
If you have never been tested for hepatitis C, or have hepatitis B and have not been rechecked in the past year, schedule a visit.