What are fevers, exactly? Why do kids get them? Why do parents and doctors care so much about them? Let's find out. What Causes a Fever? Most human beings have a body temperature of around 98.6°F (37°C). Some people will have a normal temperature that's a little higher; others will have a normal temperature that's a little lower.
What Causes Fevers? Fevers in kids are usually caused by an infection. A fever helps the body by stimulating the immune system to fight the infection. Doctors also think the higher temperature makes it harder for the germs to grow.