Medium-chain acyl-coenzyme A dehydrogenase deficiency
（重定向自MCAD deficiency）
Medium-chain acyl-CoA dehydrogenase deficiency, often known as MCAD deficiency or MCADD is a disorder of fatty acid oxidation that impairs the body's ability to break down medium-chain fatty acids into acetyl-CoA. The disorder is characterized by hypoglycemia and sudden death without timely intervention, most often brought on by periods of fasting or vomiting.