Amy A Gelfand1, Renata C Gallagher2. 1. Department of Neurology, UCSF, San Francisco, CA, USA. 2. Department of Pediatrics, UCSF, San Francisco, CA, USA.
Abstract
BACKGROUND: Inborn errors of metabolism are on the differential for patients presenting with a cyclic vomiting syndrome phenotype. Classes of disorders to consider include: mitochondrial disorders, fatty acid oxidation disorders, urea cycle defects, organic acidurias, and acute intermittent porphyria. AIM: This article reviews the metabolic differential diagnosis and approach to screening for inborn errors in children and adults presenting with a cyclic or recurrent vomiting phenotype. CONCLUSION: Cyclic vomiting syndrome is thought to be an episodic syndrome that may be associated with migraine. It is a diagnosis of exclusion. Inborn errors of metabolism should be considered in the patient presenting with a recurrent vomiting phenotype. Mitochondrial dysfunction may play a role in cyclic vomiting syndrome, and true mitochondrial disorders can present with a true cyclic vomiting phenotype.
BACKGROUND:Inborn errors of metabolism are on the differential for patients presenting with a cyclic vomiting syndrome phenotype. Classes of disorders to consider include: mitochondrial disorders, fatty acidoxidation disorders, urea cycle defects, organic acidurias, and acute intermittent porphyria. AIM: This article reviews the metabolic differential diagnosis and approach to screening for inborn errors in children and adults presenting with a cyclic or recurrent vomiting phenotype. CONCLUSION:Cyclic vomiting syndrome is thought to be an episodic syndrome that may be associated with migraine. It is a diagnosis of exclusion. Inborn errors of metabolism should be considered in the patient presenting with a recurrent vomiting phenotype. Mitochondrial dysfunction may play a role in cyclic vomiting syndrome, and true mitochondrial disorders can present with a true cyclic vomiting phenotype.
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