The most common type of mucopolysaccharidosis. It is inherited in an autosomal recessive pattern. It comprises a group of lysosomal storage diseases which includes the most severe form (Hurler syndrome) and the mildest form (Scheie syndrome). The disease is mucopolysaccharidosis type 1 (Monarch Disease Ontology term MONDO_0001586). Also known as: Alpha-L-iduronidase deficiency, MPS I - Hurler syndrome, MPS1, MPSI, Mucopolysaccharidosis Type I, iduronidase deficiency disease, lipochondrodystrophy, mucopolysaccharidosis type I.