Rett syndrome(redirected from Rett disorder)
Also found in: Medical.
Rett syndrome[′ret ‚sin‚drōm]
An inherited developmental disorder observed only in females that is characterized by a short period of normal development, followed by loss of developmental skills (particularly purposeful hand movements) and marked psychomotor retardation. A brief autistic-like phase may be observed during the preschool period, but the subsequent course and clinical features are markedly different from autism.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.