Scientists aren't sure why some people get the condition, but they know what makes it more likely to develop.
Learn what it’s like to live with NMO and how it can change over time.
Often confused with each other, these two central nervous system disorders have some of the same symptoms. They affect your spinal cord and optic nerves but are treated differently.
The first signs are often sudden eye pain and vision problems. Learn what else to watch for.
Your doctor's goal is to stop and prevent attacks. Learn more about the medicines and other treatments that may help.