[Clinical characteristics of Rett syndrome]

Rett Syndrome is a neurodevelopmental disorder, one of the least commonly occurring autism spectrum disorders [ASD], affecting mainly females. To describe features and molecular specificities of Rett syndrome. To identify articles for this review, a Pubmed search was conducted using the following keywords: Rett syndrome, regression,mutation, stereotypes. This syndrome is characterized by cognitive impairment,communication dysfunction, stereotypic movement disorder, and growth failure. It is generally caused by mutations in the MECP2 gene. Rett Syndrome has a prevalence ranging from 10-20 000 females. Specific treatement is not available, but patients need a careful planning for long-term care, with multidisciplinary approaches