pediatrics
Galactosemia
Uridine diphosphate galactose 4 epimerase deficiency
There are benign and severe phenotypes. Incidence of the benign form is 1/23,000 births in Japan; no incidence data are available for the more severe form. The benign form is restricted to red and white blood cells and causes no clinical abnormalities. The severe form causes a syndrome indistinguishable from classic galactosemia, although sometimes with hearing loss. 