I don't know of any treatment.  But, I can share that my partner who has had RR MS for over 25 years is now experiencing SPMS.  Although he struggles to walk 20 feet, and refuses to use a scooter or wheelchair, we are still able to go around town together, cruise to the beach, and go out to events.  The miracle for us is the Segway.  We go for "strolls" every day and night.  And because I can also use a Segway, my partner is not identified as disabled which is important for him at this stage of the disease.  Everyone handles the psychological aspect of this disease differently.  But the Segway literally changed our lives.  After two years of sitting in the house everyday, now we cruise to the beach, the store, through parks, and to community events.  I have uploaded a video on Vimeo.  Send me an email if interested in watching the video or finding out more about the Segway.  drmarcromano at aol <dot> com