NMOSD is a rare autoimmune disease
NMOSD is a chronic condition that affects the central nervous system, but it may be managed with appropriate treatment.
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15,000
people in the US
are estimated to be living with NMOSD
![](/-/media/Alexion_nmosd_patient/icons/identification-icon.gif)
39
years of age
median age of onset of NMOSD
![Artwork of cells and astrocytes](/-/media/Alexion_nmosd_patient/Astrocyte-bloodstream-image.png)
Uncover a cause of damage and disability in NMOSD
Understanding anti-AQP4 antibody-positive NMOSD attacks is a first step toward managing your condition
Learn how to help manage your NMOSD
Engage with experts and keep up with the NMOSD community