A Case of Eosinophilic Granulomatosis With Polyangiitis (EGPA) Peripheral Neuropathy With Positive Anti-Myelin Oligodendrocyte (MOG) Antibodies

Peripheral neuropathy is a common manifestation of Eosinophilic Granulomatosis with Polyangiitis (EGPA), a rare autoimmune disorder caused by eosinophilic infiltration of multiple organs including the nervous system. Recent research has shown an association between myelin oligodendrocyte glycoprotein (MOG) antibodies and various neurologic conditions. We present a unique case of EGPA with positive MOG antibodies in the cerebrospinal fluid (CSF) in a patient presenting with peripheral neuropathy. We also highlight a few diagnostic dilemmas with EGPA and the importance of early diagnosis and appropriate treatment. Clinical, laboratory, radiological, and electrophysiologic findings are discussed.