They told journalists at a hospital in the eastern French city of Grenoble that the retired former world champion is being kept in an artificial coma.
“We carried out an emergency operation to drain away intra-cranial blood clots,” said neurosurgeon, Professor Stéphan Chabardès at a news conference.
“And while the post-surgery scanner showed an evacuation of the intra-cranial blood clots, it also, unfortunately, showed widespread bilateral haemorrhaegic lesions.”
Schumacher, 44, was skiing with his teenage son when he fell and hit his head on a rock on Sunday morning. It happened in the French Alps resort of Meribel where he has a holiday home.
He was wearing a helmet and doctors said anyone involved in such a high-speed accident without protection would have died.
Schumacher’s family is by his bedside.