Are fevers dangerous? A fever can be dangerous if they get as high as 105 degrees Fahrenheit. You may be at risk for organ malfunction and failure if your body temperature rises this high.

Following his disappointing run at the 2025 ABN AMRO Open, it has been revealed that Danish star Holger Rune was under the weather during the ATP 500 tournament, according to his mother, Aneke Rune.