A rare, systemic disease characterized by persistent vomiting with confusion, lethargy, disorientation, hyperreflexia, hyperventilation, and tachycardia, with rapid progression to seizures, non-inflammatory encephalopathy, coma and death. It typically develops between 12 hours and 3 weeks after recovery from a viral illness, such as upper respiratory tract infection or gastroenteritis. Hepatomegaly, acute hepatic steatosis, fatty liver degeneration and multiple laboratory abnormalities are associated. [from
ORDO]