Anti-myelin oligodendrocyte glycoprotein (MOG) associated disease masquerading as prolonged intractable nausea and vomiting.

The clinical and radiological spectrum of myelin oligodendrocyte glycoprotein (MOG) antibody associated disease continues to expand. Here, we describe a case of prolonged, relapsing, intractable nausea and vomiting misdiagnosed as a functional disorder for more than one year. The patient did not receive a neurological workup until clear neurological signs developed. This case exemplifies the delay in diagnosis when neurological disease presents with seemingly non-neurological symptoms and illustrates brainstem and upper spinal cord radiological findings that can help guide the treating physician to test for MOG antibodies and provide the appropriate treatment.