Opsoclonus-myoclonus-ataxia syndrome (OMAS) is an inflammatory neurological disorder, often caused by the immune system reacting to a cancerous tumor (paraneoplastic etiology). It is characterized by associated ocular, motor, behavioral, sleep and language disturbances. The onset is usually abrupt, often severe, and it can become chronic.
One in 10 Americans lives with rare disease, many of whom fight a daily battle to access the care and support they need. Your gift to the National Organization for Rare Disorders (NORD®) funds life-changing programs and helps us advance policies and research to ensure that everyone gets the care they need AND deserve.