HIS Deficiency

Essential
It is feasible that the major title of the record Histidinemia is not the name you anticipated.
Histidinemia is an uncommon genetic metabolic problem defined by a shortage of the enzyme histidase, which is essential for the metabolic rate of the amino acid histidine. The bulk of people with histidinemia have no apparent signs that would certainly show that an individual has this problem (asymptomatic).