The VA neurologists now 0nly think I have PPMS after denying anything was wrong for the last 40 years--very long story at age 65. My MRI's (1984-2009 Univ. Miss. Med. Ctr. and Mayo in MN) show no plaques and rarely does PPMS show none. PPMS is a slowly developing type vs. the other types that have some steroid meds that stop sudden exacerbations as those types are prone to do that often. My doc said there is no treatment protocol for PPMS, only for symptoms. My meds include many more than yours just enough to keep me on a cane, wheelchair in hospital and hand controls in my car. Stay active and healthy like you are and as my support group members would say, "MS does not make you immune to other diseases." Beware of quacks.