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Devic's disease, or neuromyelitis optica (NMO), is a rare autoimmune disorder that affects the central nervous system. It occurs when the immune system attacks the optic nerves and the spinal cord, leading to inflammation and damage in these areas. Its symptoms include vision loss, weakness in the legs or arms, neck or back pain, as well as bladder and bowel control problems. The symptoms can recur and lead to complications, so treatment focuses on preventing relapses to avoid disability. This often involves immunosuppressive medications, with early diagnosis being crucial to minimize damage. Risk factors include being female, a link to vitamin D deficiency, smoking, and previous injuries, although the exact causes of the disease are still not well understood.
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