Although Rett syndrome has been recognized in the Western Hemisphere for the past 20 years, it was initially described by Andreas Rett in 1965. [1] At the same time, Bengt Hagberg was evaluating ...
It was first described by Austrian pediatrician Andreas Rett in 1966. In DSM-IV-TR page 76, Rett's Disorder 299.80 is listed under the broad category of Pervasive Developmental Disorders.