[Languaje and hearing in Prader-Willi syndrome].

Prader-Willi syndrome was described for the first time in 1956. Due to its lack of biological markers its diagnosis is a clinical one, taking into consideration that it varies with age. It is characterised by neonatal hypotonia, obesity, mild mental retardation or learning incapacity, behavioural problems, mainly towards food. Most aspects studied have been centred in medical and genetic aspects, whereas those related to hearing and language have been somewhat limited. We carry out a revision of those aspects.