Metabolic Disorders comprise a large class of genetic diseases involving disorders of the metabolism.

A broad range of conditions including Galactosaemia, Hurler syndrome, Krabbe disease, Lesch Nyhan syndrome, Menkes disease, Metachromatic Leukodystrophy, Morquio syndrome, Sanfilippo syndrome, Tay-Sachs disease and Zellweger syndrome are classified as metabolic disorders.