Hepatitis A: Symptoms, Causes & Treatment

Hepatitis A is a viral disease that affects the liver, caused by the hepatitis A virus. It differs from other types of hepatitis (B and C) in its mode of transmission and course, as it spreads mainly by the oral route after eating food or drinking water contaminated with the stool of an infected person, or through close contact and poor hygiene.

This type spreads more in areas with poor sanitation and unsafe water, and is common in children whose infection may be mild or symptomless. After an incubation period of several weeks, symptoms appear as fatigue, loss of appetite, nausea, and pain in the upper right abdomen, usually followed by yellowing of the skin and eyes (jaundice) and dark urine.

The reassuring news is that hepatitis A — unlike B and C — does not turn into chronic liver disease, and the vast majority of patients recover completely within weeks to months and retain lifelong immunity. There is no direct antiviral treatment; care is supportive with rest, hydration, and nutrition. Prevention remains most important through personal hygiene, handwashing, and food and water safety, with an effective vaccine available and recommended for at-risk groups and travelers to endemic areas.

• Fatigue, loss of appetite, and nausea.
• Pain in the upper right abdomen.
• Yellowing of the skin and eyes (jaundice).
• Dark urine and pale stool.
• Low fever and sometimes vomiting.

• Infection with the hepatitis A virus.
• Eating food or drinking water contaminated with stool.
• Close contact with an infected person and poor hygiene.

• Travel to endemic areas with poor sanitation.
• Poor hygiene and unsafe water.
• Household contact with an infected person.

• Liver-function tests showing elevated enzymes.
• A blood test for hepatitis A antibodies to confirm infection.

Supportive care

• Rest, hydration, and balanced nutrition.
• Avoiding alcohol and liver-straining medications except under medical supervision.

There is no direct antiviral treatment; the disease usually resolves on its own. This content is educational and does not replace medical advice.

• Rarely acute liver failure, especially in older adults or those with liver disease.
• A temporary relapse of symptoms in some cases.
• Dehydration from vomiting.

• The effective hepatitis A vaccine.
• Handwashing and food and water safety.
• Avoiding unsafe food and water during travel.