Dr. Michael Levy, an expert in rare neuroimmune disorders, gives a presentation entitled "I have NMOSD. Now what?", the first podcast in a ten-part series called ABC's of NMOSD. Dr. Levy defines neuromyelitis optica spectrum disorder (NMOSD) and explains the history of the disease. He discusses potential causes and diagnostic criteria. Finally, Dr. Levy discusses acute treatments, short-term expectations after diagnosis, and preventative treatments.