Boopieup, My daughter Ella who has MS, gets the blue leg syndrome, she also gets the ice cold feet thing when she is in the midst of a relapse. Other times her feet might go blue but without the painful cold sensation.
Both conditions are improved somewhat by reducing any constriction of the legs and feet (no elasticated socks, shoes or bending/pressing of the knees). What she does is: wear soft loose trousers, loose woolen socks, loose leggings over her calves and places a heating pad under her feet. When this is very bad, loosely wrapping a duvet arount the legs and feet seems to help too.
No one has been able to explain this...
Michele, warrior4MS, mother and champion for Ella, the MSer. The solution is out there we just have to ask the right questions.