Hepatitis B is a viral hepatitis due to infection by the hepatitis B virus (HBV) and causing an inflammation of the liver.
Symptoms of acute disease are essentially inflammation of the liver, with or without jaundice and digestive disorders with nausea and vomiting at this stage of evolution is usually benign even if hepatitis B is the most severe form of viral hepatitis but there, although rarely, to fulminant fatal outcome. The infection often goes unnoticed during the acute infection and in patients carrying the virus. In nearly one out of ten cases of acute hepatitis B do not heal and becomes a chronic infection. The chronic carrier has no obvious symptoms but is likely to contaminate his surroundings. In cases of chronic active hepatitis, the symptoms may be mild fever, fatigue, digestive disorders (nausea, vomiting, abdominal pain), jaundice, dark urine or pale stools.