Case of the month. June 1996--anorexia nervosa

Brain Pathology
D Lacomis

Abstract

A 32 year old woman with a history of anorexia nervosa began experiencing severe muscle weakness. Proximal weakness was worse than distal and she became unable to walk. Serum creatine kinase was elevated 15-fold and EMG was consistent with a myopathic process. Muscle biopsy showed focal areas of absent staining using NADH and ATPase enzyme histochemistry. Gomori trichrome revealed many positive inclusions which were positive using immunohistochemistry for actin. Electron microscopy revealed these areas to contain cytoid bodies with Z-band streaming and disorganization of the myofibrillar network. These findings are consistent with the myopathy associated with ipecac (emetine) toxicity. A urine toxicology screen demonstrated evidence of emetine abuse, which was later admitted by the patient. Following discontinuation of the drug, the patient recovered normal muscle strength.

Citations

Jul 20, 2014·Neurologic Clinics·Mamatha PasnoorMazen M Dimachkie
Jan 28, 2003·Muscle & Nerve·Joern P Sieb, Thomas Gillessen

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Anorexia Nervosa

Anorexia nervosa (AN) is a psychiatric condition characterized by severe weight loss and secondary problems associated with malnutrition. Here is the latest research on AN.