Multiple sclerosis is a chronic disease of the central nervous system where the immune system attacks the myelin sheath protecting nerve cells. Symptoms vary depending on location and severity of attacks and can include issues with muscle control, sensation, vision, speech, swallowing, as well as bowel and bladder function. While there is no cure, treatment aims to manage symptoms and maintain quality of life through medications that slow progression like various interferons, glatiramer acetate, and mitoxantrone.