Hepatitis B (HBV): Treatment, Symptoms, and Vaccine

Hepatitis B is a viral infection that affects the liver. Many people experience few or no symptoms, which is part of why routine screening and vaccination are so important.

Left untreated, chronic infection can increase the risk of cirrhosis and liver cancer over time, but early diagnosis and vaccination can significantly reduce that risk.

What Is Hepatitis B?

Hepatitis B is caused by the hepatitis B virus (HBV), which infects liver cells. Infection may be acute, meaning short-term, or chronic, meaning long-lasting.

Many people recover completely after an acute infection, while others go on to develop a chronic infection that requires ongoing monitoring to help prevent liver complications.

Hepatitis B Treatment

Treatment depends on whether the infection is acute or chronic.

Treatment for Acute Hepatitis B

Acute hepatitis B is typically managed with supportive care:

• Rest
• Adequate hydration
• Balanced nutrition
• Symptom management
• Regular medical monitoring

Most healthy adults recover without needing antiviral medication.

Treatment for Chronic Hepatitis B

Chronic hepatitis B treatment aims to:

• Reduce viral replication
• Protect liver function
• Prevent cirrhosis
• Lower the risk of liver cancer

Commonly prescribed antiviral medications include tenofovir and entecavir. Treatment decisions depend on several factors, including HBsAg results, HBV DNA level, liver function, degree of liver damage, and pregnancy status when applicable.

Not every person with chronic hepatitis B needs medication; your doctor can help determine what's appropriate for your situation.

Hepatitis B Symptoms

Symptoms vary depending on the stage of infection.

Acute Hepatitis B Symptoms

Acute infection may cause nausea, vomiting, headache, fatigue, loss of appetite, dark urine, yellowing of the eyes and skin (jaundice), or upper right abdominal discomfort. Some people have no symptoms at all.

Chronic Hepatitis B Symptoms

Chronic infection often develops silently. When symptoms do appear, they may include persistent fatigue, unexplained weight loss, an enlarged liver or spleen, or symptoms related to liver damage in more advanced stages.

Many people remain symptom-free for years until complications develop, which is why regular monitoring matters even without noticeable symptoms.

Hepatitis B Vaccine

Vaccination is the most effective way to prevent hepatitis B. The first dose is ideally given within 24 hours after birth, and the vaccine is part of Indonesia's routine childhood immunization program.

Adults who were never vaccinated can also receive the vaccine, which is widely available at hospitals and clinics.

How Hepatitis B Spreads

Hepatitis B commonly spreads through:

• Birth from an infected mother
• Contact with infected blood
• Unprotected sexual contact
• Sharing needles
• Unsafe tattoo or piercing equipment
• Occupational exposure among healthcare workers

Hepatitis B is not spread through hugging, sharing meals, coughing, sneezing, or other casual contact.

How Hepatitis B Is Diagnosed

Diagnosis typically relies on a combination of blood tests, including HBsAg (a marker that indicates active infection), Anti-HBs (which indicates immunity, from vaccination or past infection), Anti-HBc (which indicates past or current infection), and HBV DNA testing when indicated to measure viral activity. Liver function tests help assess how well the liver is working.

Together, these tests help your doctor determine whether an infection is present, how active it is, and whether treatment is needed.

Who Should Get the Hepatitis B Vaccine?

Vaccination is generally recommended for:

• Newborn babies
• Children who missed vaccination
• Teenagers without previous vaccination
• Healthcare workers
• People with multiple sexual partners
• People who inject drugs
• Household contacts of infected individuals
• Adults at increased exposure risk
• Individuals advised by their healthcare provider

Babies born to mothers with hepatitis B may need both the hepatitis B vaccine and hepatitis B immune globulin (HBIG), a treatment that provides immediate short-term protection, shortly after birth.

Possible Complications

If chronic hepatitis B is left untreated, it can lead to cirrhosis, liver failure, or liver cancer over time. Regular monitoring and appropriate treatment greatly reduce these risks.

When Should You See a Doctor?

Consider seeking medical care if you experience yellow eyes or skin, persistent nausea, severe fatigue, dark urine, upper right abdominal pain, known exposure to hepatitis B, or a positive hepatitis B screening result. Prompt evaluation is worth considering even without symptoms if you suspect you've been exposed.

Can Hepatitis B Be Prevented?

Preventive measures include:

• Vaccination
• Safe sexual practices
• Avoiding shared needles
• Proper infection control
• Safe tattoo and piercing practices
• Routine screening for high-risk individuals
• Prenatal screening during pregnancy

Protect Your Liver Health Today

Hepatitis B can often be prevented through vaccination, and early diagnosis allows for timely monitoring and treatment. Chronic hepatitis B can frequently be managed successfully with appropriate medical care, and regular follow-up helps protect long-term liver health.

If you'd like to discuss vaccination, screening, or ongoing monitoring, our gastroenterology and internal medicine specialists at Bali International Hospital are here to help. Contact us or book an appointment to take the next step in protecting your health.

Frequently Asked Questions

What Are the Early Signs of Hepatitis B?

Early signs can include fatigue, nausea, loss of appetite, dark urine, and jaundice, though many people have no noticeable symptoms at all, especially in the early stages.

How Is Hepatitis B Diagnosed?

Hepatitis B is diagnosed through blood tests such as HBsAg, Anti-HBs, and Anti-HBc, along with HBV DNA testing and liver function tests when needed to assess how active the infection is.

Can Hepatitis B Become a Long-Term Condition?

Yes. While many people recover completely from an acute infection, some go on to develop chronic hepatitis B, which requires ongoing monitoring and, in some cases, antiviral treatment.

Is There a Vaccine to Prevent Hepatitis B?

Yes. The hepatitis B vaccine is highly effective and is recommended for:

• Newborns
• Unvaccinated children and teenagers
• Adults at increased risk of exposure