What is NMOSD? A rare disease commonly misdiagnosed as MS

Neuromyelitis optica spectrum disorder (NMOSD) is a rare, severe inflammatory condition of the central nervous system that predominantly affects the optic nerves and the spinal cord. The condition will present differently depending on the individual, but it usually manifests with clinical symptoms of optic neuritis (inflammation of the optic nerve) and myelitis (inflammation of the spinal cord). Patients with NMOSD may therefore have blurry vision; pain upon eye movements; loss of vision; sensory and motor disturbances; weakness, numbness or tingling in an extremity; impaired ambulation and bladder or bowel disturbances. In extreme circumstances, patients may have blindness in one or