Case Presentation: A 57-year-old man with IgA vasculitis on maintenance rituximab, cyclophosphamide and prednisone presented with 2 months low-grade fevers, fatigue, 60 pounds weight loss, and bilateral visual abnormalities. Family cared for his 7 cats and new kittens while he presented to our hospital. Ophthalmological exam was notable for bilateral neuroretinitis. MRI of the brain […]