Rett syndrome

Rett syndrome (RTT) is a severe neurodevelopmental disorder affecting the central nervous system.

Apraxia

A defect in the understanding of complex motor commands and in the execution of certain learned movements, i.e., deficits in the cognitive components of learned movements.


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PMID (PMCID)
1283671
 FEMALE Child
Rett syndrome in South Africa.
Moodley M.
Ann Trop Paediatr. 1992;12(4):409-15.
Rett syndrome is a fairly recently recognized neurodevelopmental disorder of unknown aetiology that affects exclusively girls in whom early development is apparently normal but by the age of 6-18 months autistic behaviour and dementia, apraxia of gait, stereotypic repetitive hand movements, seizures and deceleration of head growth occur.
2533856
 FEMALE Child
[Rett syndrome. A report of fifteen cases].
Echenne B, Bressot N, Cheminal R, Van Leuwen F, Compagnon P, Azais M.
Ann Pediatr (Paris). 1989;36(10):661-8.
Our analysis of 13 observations of "classical" Rett syndrome shows that the most common findings include cognitive regression, autistic behavior, hypotonia, apraxia, and very suggestive stereotyped movements.