<unk>  (British<unk> , from Greek γαλακτόζη + αίμα, meaning galactose + blood, accumulation of galactose in blood) is a rare genetic metabolic disorder that affects an individual's ability to metabolize the sugar galactose properly.<unk>  follows an autosomal recessive mode of inheritance that confers a deficiency in an enzyme responsible for adequate galactose degradation. Friedrich Goppert (1870–1927), a German physician, first described the disease in 1917, with its cause as a defect in galactose metabolism being identified by a group led by Herman Kalckar in 1956.<unk>  was the second disorder found to be detectable through newborn screening methods by Robert Guthrie. Its incidence is about 1 per 60,000 births for people of European ancestry. In other populations the incidence rate differs.<unk>  is about one hundred times more common (1:480 births) in the Irish Traveller population.
Galactosemia
Pentosuria
Orotic aciduria
Glycosuria
D-Glyceric acidemia
Isovaleric acidemia
Hawkinsinuria
Sialuria