Crigler-Najjar syndrome is a rare disorder of bilirubin metabolism resulting in familial, congenital, non-hemolytic hyperbilirubinemia. This often results in neonatal kernicterus. It is divided into two types: type I and type II (sometimes called Arias syndrome). Together with Gilbert's syndrome, these are the three known hereditary defects in bilirubin conjugation, thus all characterized by increased mono- or unconjugated (=indirect) bilirubin. Some puzzling features of these diseases have been clarified since the discovery of the uridine diphosphate glucuronyl transferase 1 (UGT1) gene complex.
Intense jaundice appears in the first days of life and persists thereafter. Type 1 is characterised by a serum bilirubin usually above 345 µmol/L (310 - 755) (whereas the reference range for total bilirubin is 2 - 14 μmol/L).
More on [ Crigler-Najjar syndrome ]
Chronic Illness
Nutrition and Metabolism Disorders

Crigler-Najjar Association of America - Support site for parents and patients with Crigler-Najjar Syndrome Type 1 and Type 2. For physicians and researchers learn about essential treatment to avoid brain damage due to excessive bilirubin concentrations.
Crigler-Najjar Disease - Bi-lingual site with information and links on this disease.
Meta Description: [ Information and useful links on Crigler-Najjar syndrome ]
NORD: Crigler Najjar Syndrome Type I - General information and further resources.
Meta Description: [ National Organization for Rare Disorders is dedicated to helping people with rare, orphan diseases. Rarediseases.org contains information on the prevention, treatment and cure of rare diseases. ]
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