He was then diagnosed with blood clots on the brain, which is due to an inflammatory condition in the brain vessels.
A statement from FC Midtjylland read: "As the public is already aware, FC Midtjylland's Swedish national team player, 28-year-old Kristoffer Olsson, was admitted to Aarhus University Hospital on 20 February 2024 after losing consciousness at his home earlier that day.
"Based on the extensive examinations, scans and tests of recent weeks, the doctors can now determine that Kristoffer is affected by several small blood clots on both sides of the brain, as a result of an extremely rare inflammatory condition in the vessels of the brain.
The diagnosis matches the thesis on which the medical specialists have so far worked and treated Kristoffer.
"Kristoffer Olsson's condition is now assessed as stable, and the doctors continue to see little progress. At the same time, they find that Kristoffer has an increasing degree of consciousness." The statement went on to make clear that doctors will try and wean Olsson off of the ventilator, but just how long his treatment will take remains unclear.
Midtjylland CEO Claus Steinlein added: "I would like to thank the public and the press for having shown warm-hearted support, respect and consideration in recent times towards Kristoffer as well as his family and the healthcare staff.
It means an incredible amount. Also for us at FC Midtjylland, where players and staff are obviously very affected by Kristoffer's situation. Therefore, I would like to thank you for the fact that our message has been received and continues to be respected."