Arginase Deficiency
Arginase Deficiency : An autosomal recessive aminoacidopathy involving the biosynthesis of urea; arginine is elevated in blood and urine and may cause secondary cystinuria; oroticaciduria is common, but hyperammonemia is rare. Signs include psychomotor retardation, hepatomegaly, and scalp discoloration. Also called Argininemia and Hyperargininemia