Chronic Hepatitis B

What is Chronic Hepatitis B?

Chronic Hepatitis B is a long-term infection caused by the Hepatitis B virus. This virus attacks the liver and causes inflammation that can last for years or even decades. When the virus stays in your body for more than six months, doctors call it chronic rather than acute.

The infection happens when the Hepatitis B virus enters your bloodstream and travels to your liver. Over time, the ongoing inflammation can damage liver cells and lead to scarring called cirrhosis. Some people with chronic Hepatitis B develop liver cancer later in life. Not everyone with the virus feels sick right away, which is why testing is so important.

About 296 million people worldwide live with chronic Hepatitis B. Many were infected as babies or young children, when the virus is most likely to become chronic. The good news is that treatment can control the virus and prevent serious liver damage in most cases.

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Symptoms

Fatigue that does not improve with rest
Pain or discomfort in the upper right abdomen
Loss of appetite and unintended weight loss
Nausea or vomiting
Yellowing of the skin and eyes, called jaundice
Dark urine that looks like tea
Pale or clay-colored stools
Joint pain or muscle aches
Fever that comes and goes

Many people with chronic Hepatitis B have no symptoms for years or even decades. The virus can quietly damage your liver without causing noticeable problems. This is why regular testing is essential, especially if you have risk factors for the infection.

Causes and risk factors

Chronic Hepatitis B develops when the Hepatitis B virus stays in your body for more than six months. The virus spreads through contact with infected blood or body fluids. Common ways people get infected include birth to an infected mother, sharing needles or drug equipment, unprotected sex with an infected partner, and exposure to infected blood through cuts or medical equipment. The younger you are when you get infected, the more likely the infection becomes chronic. About 90% of babies infected at birth develop chronic Hepatitis B, compared to only 5% of adults.

Risk factors include being born in regions where Hepatitis B is common, living with someone who has chronic Hepatitis B, working in healthcare with exposure to blood, receiving dialysis for kidney disease, and having HIV infection. Men who have sex with men also face higher risk. Some people get infected through tattoos or piercings done with unsterilized equipment. Blood transfusions before 1992 in the United States carried some risk, though screening has made this rare today.

How it's diagnosed

Doctors diagnose chronic Hepatitis B through blood tests that look for the virus and antibodies your immune system makes against it. The Hepatitis B Surface Antigen test shows if the virus is currently in your body. If this test stays positive for more than six months, you have chronic infection. The Hepatitis B Core Antibody test shows if you have been exposed to the virus at any time. When the IgM version of this antibody persists, it may indicate ongoing chronic infection.

Liver enzyme tests help doctors understand how much the virus is damaging your liver. Aspartate Aminotransferase, or AST, rises when liver cells are injured. Gamma-Glutamyl Transferase, or GGT, also increases with liver inflammation. These enzymes help your doctor track disease activity and decide when treatment is needed. Rite Aid offers testing for Hepatitis B markers and liver enzymes through Quest Diagnostics locations. Regular monitoring helps catch liver damage early when treatment works best.

Treatment options

Antiviral medications like tenofovir and entecavir to suppress the virus and prevent liver damage
Regular monitoring of liver enzymes and viral levels every 3 to 6 months
Avoiding alcohol completely, as it accelerates liver damage
Limiting medications that stress the liver, including acetaminophen in high doses
Eating a balanced diet rich in vegetables, fruits, whole grains, and lean protein
Maintaining a healthy weight to prevent fatty liver disease
Getting vaccinated against Hepatitis A to prevent additional liver infection
Discussing liver cancer screening with your doctor, usually through ultrasound every 6 months
Taking steps to prevent transmission to others, including safe sex practices
Seeking specialist care from a hepatologist for advanced liver disease

Frequently asked questions

Chronic Hepatitis B is diagnosed when the Hepatitis B Surface Antigen stays positive for more than six months. Acute infection usually clears within six months as your immune system fights off the virus. Your doctor will test you at least twice, several months apart, to determine if the infection has become chronic. People infected as babies or young children are much more likely to develop chronic infection than adults.

Complete cure of chronic Hepatitis B is rare, but treatment can control the virus effectively in most people. Antiviral medications suppress the virus to very low or undetectable levels, which prevents liver damage and transmission. Some people clear the surface antigen after years of treatment, which is called functional cure. However, the virus DNA often remains hidden in liver cells, so monitoring is still needed.

The Hepatitis B Surface Antigen test shows if you have active infection. The Hepatitis B Core Antibody test shows if you have been exposed to the virus. Liver enzyme tests like AST and GGT measure liver damage from the infection. Your doctor may also check viral load to see how much virus is in your blood and hepatitis B e-antigen to assess how active the infection is.

Most people with chronic Hepatitis B need blood tests every 3 to 6 months. These tests check liver enzymes, viral load, and sometimes alpha-fetoprotein for liver cancer screening. Your doctor may test more frequently if you start new treatment or if your liver enzymes are rising. Regular monitoring helps catch problems early when treatment is most effective.

Not everyone with chronic Hepatitis B develops serious liver disease. Your risk depends on viral load, how long you have been infected, alcohol use, and other liver conditions. About 15 to 40% of people with untreated chronic Hepatitis B eventually develop cirrhosis or liver cancer. Antiviral treatment greatly reduces this risk by keeping the virus under control and preventing ongoing liver damage.

Avoiding alcohol completely is the most important lifestyle change, as alcohol accelerates liver damage. Maintaining a healthy weight prevents fatty liver disease, which worsens Hepatitis B. Eating a diet rich in vegetables, fruits, and whole grains supports liver health. You should also review all medications and supplements with your doctor, as some can stress your liver.

Yes, Hepatitis B can spread through blood and body fluids, but simple precautions prevent transmission. All household members should get vaccinated against Hepatitis B, which provides strong protection. Cover cuts and wounds, do not share razors or toothbrushes, and practice safe sex. If you are pregnant, your baby can receive vaccination and immunoglobulin at birth to prevent infection.

Antiviral medications like tenofovir and entecavir are most commonly used to treat chronic Hepatitis B. These pills suppress viral replication and reduce liver inflammation. Most people take them once daily for many years or indefinitely. Your doctor decides when to start treatment based on viral load, liver enzyme levels, and signs of liver damage on imaging or biopsy.

Liver enzymes like AST and GGT rise when liver cells are damaged or inflamed. Many people with chronic Hepatitis B feel fine even when enzymes are elevated and the virus is harming their liver. Monitoring these enzymes helps your doctor assess disease activity and decide when to start treatment. Catching liver damage early prevents cirrhosis and cancer later.

Yes, seeing a hepatologist or gastroenterologist who specializes in liver disease is recommended. These specialists understand when to start antiviral treatment and how to monitor for complications. They can perform or order liver imaging and biopsies when needed. Most people see their specialist every 6 months along with regular blood work to track the infection.