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Regression in individuals with Rett syndrome
Tony Charman1, Hilary Cass, Lucy Owen
1Behavioural and Brain Sciences Unit, Institute of Child Health, 30 Guildford St, WC1N 1EH London, UK. t.charman@ich.ucl.ac.uk
Brain & Development
|July 27, 2002
Summary
Early developmental delays are common in Rett syndrome, with regression typically occurring between 12-18 months. Understanding these pre-regression features aids early diagnosis of this neurological disorder.
Area of Science:
- Neurology
- Developmental Pediatrics
- Genetics
Background:
- Rett syndrome is a rare neurodevelopmental disorder primarily affecting girls.
- Characterized by regression of acquired skills, diagnosis can be challenging.
- Understanding early developmental patterns is crucial for timely intervention.
Purpose of the Study:
- To describe the pre-regression and regression features in a cohort of individuals with Rett syndrome.
- To identify potential early indicators for diagnosis.
- To explore the relationship between age at regression and clinical severity.
Main Methods:
- Retrospective case series analysis.
- Review of developmental history and clinical data from 53 girls and women with Rett syndrome.
- Analysis of skill loss patterns, age of regression, and associated symptoms.
Main Results:
- Loss of hand skills and communication abilities were the most frequent regression symptoms.
- Regression typically occurred between 12-18 months, but varied.
- Pre-regression developmental delays were present in over two-thirds of cases, particularly in younger individuals.
- Age at regression did not correlate with physical or growth symptom severity.
Conclusions:
- Pre-regression developmental abnormalities are common in Rett syndrome and can precede significant skill loss.
- Early identification of these subtle delays is vital for prompt diagnosis and genetic analysis.
- Further research into pre- and post-regression features will improve clinical management and support for affected individuals.