Symptoms of ML III are often not noticed until the child is 3–5 years of age. Patients with ML III are generally of normal intelligence (trait) or have only mild mental retardation.(Intelligence is challenged) instead of using the mental retardation classification. These patients usually have skeletal abnormalities, coarse facial features, short height, corneal clouding, carpal tunnel syndrome, aortic valve disease and mild enlargement of organs. Some children with severe forms of this disease do not live beyond childhood. However, there is a great variability among patients - there are diagnosed individuals with ML III living in their sixties.
Pseudo-Hurler polydystrophy
Ghosal hematodiaphyseal dysplasia
Acrocephalosyndactylia
Craniodiaphyseal dysplasia
Hemifacial microsomia
Parastremmatic dwarfism
Mesomelia
Trismus pseudocamptodactyly syndrome