A Case of Mitochondrial Neurogastrointestinal Encephalomyopathy with Metabolic Complications During Refeeding.

BACKGROUND Anorexia nervosa has been referred to as the "great pretender" of medicine and is often misdiagnosed. We present a rare genetic disorder that was misdiagnosed as anorexia nervosa. This case highlights the diagnosis of mitochondrial neurogastrointestinal encephalomyopathy in a patient with previously diagnosed anorexia nervosa, which was discovered due to the metabolic abnormalities and intolerance of nutrition encountered during refeeding.