The purpose of this study is to find effective physical therapy treatments for individuals who have severe multiple sclerosis. Physical therapy treatments for mild-to-moderate multiple sclerosis exists, however, very limited research has been done for physical therapy for severe multiple sclerosis (MS). In this study 10 participants diagnosed with severe MS will engage in 1-hour physical therapy sessions twice a week for 6 weeks to address limitations in standing, balancing, and bed mobility.