[Neuromyelitis optica spectrum disorder: new international recommendations and emerging therapeutic options; current status of domestic practice in diagnostics and therapeutic strategies].

Neuromyelitis optica spectrum disorder is a rare neuroimmunological disease associated with unpredictable deterioration. Even the first signs of the disease can be severe enough to lead to permanent neurological impairment, such as loss of vision or paralysis. Early symptoms can often be mistaken for another disease, leaving patients bouncing between several specialists, leading to diagnostic delay. Early detection of the disease can save lives and quality of life, as appropriate therapy started early can prevent neurologically debilitating deterioration. In Hungary, the "off label" rituximab has so far been given a facilitated procedure for therapy, while evidence-based medicines are not yet available to us.