This is a simple way to measure MS disability, mainly based on your ability to walk. Doctors use it as a way to know when to begin therapy and to tell how you are responding to therapy. Scores range from 0, which is normal, to 6, which means you are unable to walk at all.
To establish the rating, you walk 25 feet. In addition, the doctor takes a medical history and performs both physical and neurological exams. Altogether, the time needed to create the rating is no more than 30 minutes.