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Hepatitis A is a contagious liver infection caused by the hepatitis A virus (HAV). It usually causes a short-term illness, and most people recover completely without permanent liver damage. However, severe cases can sometimes lead to acute liver failure, particularly in older adults and people with existing liver disease.
What Is Hepatitis A?
Hepatitis A causes inflammation of the liver. Unlike hepatitis B and hepatitis C, hepatitis A does not normally become a chronic infection. The virus mainly spreads when a person consumes food or water contaminated with tiny amounts of infected fecal matter.
Poor sanitation, unsafe drinking water, inadequate hand hygiene, and close contact with an infected person can increase the risk of infection.
How Does Hepatitis A Spread?
Hepatitis A is highly contagious. Common ways the virus spreads include:
- Eating contaminated food or drinking contaminated water
- Close contact with an infected person
- Poor handwashing after using the bathroom
- Preparing food while infected
- Certain types of sexual contact
Casual contact, such as simply being near someone, does not usually spread hepatitis A.
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Hepatitis A Symptoms
Some people, especially young children, may have few or no noticeable symptoms. When symptoms occur, they can include:
- Fatigue and weakness
- Fever
- Loss of appetite
- Nausea or vomiting
- Diarrhea
- Abdominal discomfort
- Dark-colored urine
- Pale or clay-colored stools
- Yellowing of the skin or eyes, known as jaundice
Symptoms commonly develop about 14–28 days after infection. Adults are more likely than young children to develop noticeable symptoms.
How Is Hepatitis A Diagnosed?
Doctors can diagnose hepatitis A using blood tests that look for evidence of a recent hepatitis A infection. If you develop symptoms such as jaundice, dark urine, persistent vomiting, or significant abdominal discomfort, seek medical advice for appropriate testing.
Hepatitis A Treatment
There is no specific antiviral treatment for hepatitis A. Treatment generally focuses on supportive care. This may include adequate fluids, nutritious food, rest, and treatment of symptoms.
Most people recover fully. However, recovery can take several weeks or, in some cases, months. People with severe symptoms or signs of liver failure may require hospital care.
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How to Prevent Hepatitis A
Vaccination is one of the most effective ways to prevent hepatitis A. Good hygiene also plays an important role. Wash your hands thoroughly with soap and water after using the bathroom, changing diapers, or caring for an infected person, and before preparing or eating food.
Safe drinking water, proper sanitation, food safety, and appropriate vaccination can significantly reduce the risk of infection.
When to See a Doctor
Contact a healthcare professional if you develop symptoms that could indicate hepatitis A, particularly jaundice, dark urine, severe nausea, or abdominal pain. People with chronic liver disease may have a greater risk of serious complications.
Hepatitis A is a preventable viral liver infection that spreads mainly through contaminated food, water, and close contact. Although most people recover completely, prevention remains important. Hepatitis A vaccination, proper handwashing, safe food, clean water, and good sanitation can help protect individuals and communities from infection.
