Material and method: A cohort of 21 children (under 42 months of age) with Prader-Willi syndrome were followed in a longitudinal way by the referral center team with evaluation of language and cognitive function (every six months).
Results: Disorders seen between birth and the second year are primarily related to hypotonia with oropharyngeal dysphagia and impact on the pre-lingual phase of communication. After 2 years the psychomotor delay and the disorders of language acquisition effect development. When compared to patients who had treatment after 4 years and with data published in the literature, those patients with an early diagnosis and early treatment using kinesitherapy and logopedy showed faster linguistic acquisition. However articulation disorders still remain.
Conclusion and recommendations: This work highlights the importance of early readaptation associating kinesitherapy, logopedy and psychomotoricity which can improve the cognitive phenotype of these children.