The reigning world champion and Olympic champion in the 400 meter hurdles suffered a thigh injury in the Diamond League competition in Rabat, Morocco, on Sunday.
Thus, the World Cup in American Eugene in July is in danger for Warholm.
Warholm then does as, among others, the sprint icon Usain Bolt did before the Olympics in Rio de Janeiro - he goes to Germany to get help from the sports doctor Müller-Wohlfahrt.
"On Wednesday, he went to the Müller-Wohlfahrt clinic for treatment.
This on the recommendation and in collaboration with his sponsor Puma ", writes Warholm's mother and manager Kristine Haddal to NRK.
Jamaican sprint star Usain Bolt received treatment from Müller-Wohlfahrt for his thigh injury in 2016, and paid tribute to the doctor after his three Olympic gold medals in 2016 (100 meters, 200 meters and 4x100 meters).
Müller-Wohlfahrt was previously a doctor for Bayern Munich.
He has also treated Swedish athletes such as Christian Olsson, Emma Green and Susanna Kallur.
But even Zlatan Ibrahimovic has received help from the German.