Fever
Another common sign of mononucleosis is a fever, which can be prevalent in other infections. When the Epstein-Barr virus penetrates the body, it triggers the immune system to work. The body will increase the temperature to get rid of these foreign invaders. That’s why people with this condition might have a moderate to severe fever. While mononucleosis does not always occur with a fever, this is usually the case. Typically, a fever caused by this disease tends to range from 100 to 105 degrees, which can result in some serious complications if left untreated. [2]
