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Viral Hepatitis
 Hepatitis A
  Causes
  Transmission
  Symptoms
  Diagnosis
  Treatment
  Prevention
 Hepatitis B
 Hepatitis C
 Hepatitis D
 Hepatitis E
 Research


Hepatitis A

Symptoms

Hepatitis A does not always cause obvious symptoms. Some people may experience mild symptoms lasting one to two weeks, while others will have more severe symptoms that can last for several months. Generally, the severity of the illness increases with age, which is why children infected with the hepatitis A virus usually do not exhibit any symptoms. Symptoms of hepatitis A include the following:

  • Jaundice
  • Fatigue
  • Abdominal pain
  • Nausea and vomiting
  • Diarrhea
  • Fever
  • Loss of appetite
  • Dark urine

Symptoms can appear anywhere from two to six weeks after exposure. However, it’s important to note that infected people are contagious up to two weeks before they show any symptoms at all.


Volunteer for Clinical Studies
Volunteer for NIAID-funded clinical studies related to hepatitis on ClinicalTrials.gov.

See Also

Hepatitis News Releases

Related Links

View a list of links for more information about hepatitis.



Volunteer for Clinical Studies
Volunteer for NIAID-funded clinical studies related to hepatitis on ClinicalTrials.gov.

See Also

Hepatitis News Releases

Related Links

View a list of links for more information about hepatitis.