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Rett syndrome in a patient with medium chain acyl-CoA dehydrogenase deficiency
R P Beekman1, N Hofstee, J A Smeitink
1Twenteborg Hospital, Almelo, The Netherlands.
European Journal of Pediatrics
|April 1, 1994
Insights
Medium-chain acyl-CoA dehydrogenase (MCAD) deficiency can mimic Rett syndrome. Early developmental delay and dementia in a young child were initially attributed to MCAD deficiency but later diagnosed as Rett syndrome.
Area of Science:
- Neurodevelopmental disorders
- Metabolic disorders
- Genetics
Background:
- Medium-chain acyl-CoA dehydrogenase (MCAD) deficiency is an inherited metabolic disorder affecting fatty acid oxidation.
- Rett syndrome is a rare neurodevelopmental disorder primarily affecting girls, characterized by normal early development followed by regression.
Observation:
- A female patient presented with normal development until 13 months of age.
- Following this, she exhibited progressive developmental delay, dementia, and reduced head circumference growth.
Findings:
- The patient's clinical presentation initially suggested MCAD deficiency.
- However, the progressive neurological decline led to a final diagnosis of Rett syndrome at 3.5 years of age.
Implications:
- This case highlights the importance of considering differential diagnoses in pediatric neurodevelopmental disorders.
- It underscores the potential for overlapping clinical features between metabolic and neurodevelopmental conditions.
- Accurate diagnosis is crucial for appropriate management and genetic counseling.
Abstract:
A female patient with medium-chain acyl-CoA dehydrogenase (MCAD) deficiency developed normally until 13 months of age after which she showed a gradual developmental delay, followed by progressive dementia, and a decrease in head circumference growth culminating in the diagnosis of Rett syndrome at 3.5 years.