Sorry for the delay... Is your son still taking the Avonex? A friend of mine who has been on Avonex for years started LDN 4 days ago and is feeling somewhat worse but we have had a very hot, humid spell so that could be the reason, too.
I was Dxed w MS in '85 and have enjoyed 66 years of life. So far the LDN has me walking well with no aids (had been using forearm crutch), no more restless legs, much less cramping of hands, feet and legs, and no need of the ventilator during the day. Oh, yes! Much more energy and a heightened sense of well-being, too. Still need the Bipap vent at night though. Weakness of respiratory muscles. I'm increasing to 4.5mg tonight.
Would you believe that I have not been able to split and stack wood for the last few years but CAN this year? Hip hip hooray!