ABSTRACT
Neuromyelitis optica (NMO) is an idiopathic inflammatory demyelinating disease, characterized by optic neuritis and myelitis. NMO is a very uncommon and serious neurologic manifestation of systemic lupus erythematous (SLE). We report a 28-year-old man with NMO as neuropsychiatric manifestation of SLE. He was diagnosed as lupus nephritis at 16-year-old. He had optic neuritis at three years and seven months ago. Oral prednisolone was tapered off according to the improved eye symptoms. Two months later, he visited rheumatology clinics for urinary disturbance and paresthesia on both feet. A spinal magnetic resonance imaging revealed increased signal intensity in T2-weighted images from second to sixth cervical level and from eleventh to twelfth thoracic level. We diagnosed neuromyelitis optica and treated with intravenous cyclophosphamide therapy monthly for three times. He was discharged without any neurological deficits and has been followed up.