Multiple sclerosis (MS) is a disease that affects the central nervous system and is characterized by demyelination of nerve fibers. It commonly presents with neurological symptoms such as visual disturbances, weakness, and impaired coordination. The cause is unknown but likely involves genetic and environmental factors. Diagnosis involves MRI imaging showing lesions in the brain and spinal cord, along with ruling out other potential causes. While there is no cure, treatments can help reduce symptoms and frequency of attacks. Managing MS is challenging and often involves multiple medications with total annual costs that can exceed $30,000.