Hepatitis B
Hepatitis B is a viral liver infection that can be acute or chronic, but it is largely preventable through vaccination.
What is hepatitis B?
Hepatitis B is a type of viral hepatitis that causes liver inflammation. While many people with acute infections recover on their own, some develop chronic infections that require medical treatment.
What causes hepatitis B?
It is caused by the hepatitis B virus, which spreads through contact with blood, semen, or other body fluids from an infected person.
Who is at risk for hepatitis B?
Risk is higher for:
- Infants born to mothers with hepatitis B
- People who inject drugs or share needles
- Sex partners of people with hepatitis B
- Men who have sex with men
- People living with someone who has hepatitis B (sharing razors, toothbrushes, etc.)
- Health care and public-safety workers exposed to blood
- Hemodialysis patients
- People who have lived in or traveled to regions where the virus is common
- People with diabetes, hepatitis C, or HIV
What are the symptoms of hepatitis B?
Many people have no symptoms. When they do occur (usually 2 to 5 months after infection), they include:
- Dark yellow urine and gray- or clay-colored stools
- Fatigue and fever
- Joint pain and abdominal pain
- Loss of appetite, nausea, and/or vomiting
- Jaundice
Because chronic hepatitis B may not show symptoms for decades, screening is vital for those at high risk.
What other problems can hepatitis B cause?
Chronic hepatitis B can lead to cirrhosis, liver cancer, and liver failure. Additionally, the virus can reactivate later in life, causing new liver damage.
How is hepatitis B diagnosed?
Diagnosis involves a medical history, physical exam, and blood tests for viral hepatitis.
What are the treatments for hepatitis B?
Acute hepatitis B usually requires no treatment. For chronic infections, antiviral medicines may be prescribed if blood tests indicate liver damage.
Can hepatitis B be prevented?
The best prevention is the hepatitis B vaccine. Other precautions include:
- Not sharing needles or drug materials
- Wearing gloves when touching blood or open sores
- Ensuring tattoo and piercing tools are sterile
- Not sharing personal items like toothbrushes or razors
- Using latex or polyurethane condoms during sex
If you suspect exposure, contact a provider immediately; receiving the vaccine and hepatitis B immune globulin (HBIG) within 24 hours can help prevent infection.