It was in September that the disease struck and completely knocked out the World Cup winner.
It was impossible to train and the weeks and months just rolled by.
Only today, in Pokljuka's World Cup sprint, was the 32-year-old back.
Just a boom
And it was a successful comeback.
Out of ten shots, she missed only one, and when she crossed the finish line she was eleventh – just under a minute behind the leading Swede, Elvira Öberg.
A comeback that SVT Sports expert Björn Ferry guessed that Röiseland is satisfied with.
- She is 45 behind Elvira Öberg in terms of riding, and that will decrease with each competition, I think, he said.
When most of the top skaters had finished, Röiseland was in 14th place.
The competition is ongoing