What side affects can come with feverish children?

Confusing question: Most feverish children will have benign viral illnesses that will self heal.Some may be at the beginning of a significant illness that could require hospital care & be deadly if untreated. Fever in and of itself is a normal protective response of the body and generally elevates the breathing rate and heart rate at the same time.It does not cause deafness or learning disabilities (old wives tale.).