Most healthy adults can tolerate a fever as high as 103°F to 104°F for short periods of time without having problems. Body temperatures usually return to normal with the illness goes away. Here are some fever symptoms in adults.
Oct 07, 2016 · Adults with a fever higher than 105 degrees F or a fever over 103 degrees F that rises or lasts longer than 48 hours; In addition, you should seek medical care if you have a fever accompanied by rash and bruising, difficulty breathing, and/or pain while urinating.
Sep 11, 2019 · In general, high-grade fevers are around 103 to 104 degrees Fahrenheit, and anything over 104 F is considered dangerous. However, in practice, gauging a fever's danger is more complicated than just looking at a number—especially when it comes to children.
There is no fixed criteria for a dangerously high fever. Generally temperatures above 1010F would be a cause of concern, but if you have symptoms much before that then you should consult a doctor immediately. Some people hallucinate when they have fever without any cause, however usually it is taken as a sign of irritation of brain.