Fever is an elevation of the normal body temperature. Fever is most commonly caused by a viral or bacterial infection, but it can be a sign of illnesses not caused by infections, such as exercising in a very warm environment, rheumatoid arthritis, a reaction to a vaccine or medication, or cancer.

Common viral infection with rash occurring 1 to 3 weeks after infection

An intestinal infection caused by a parasite (Giardia intestinalis)

Human immunodeficiency virus (HIV) infection affects the body in a wide variety of ways. In the most severe infection, the virus progressively destroys the body’s immune system, causing a condition called acquired immunodeficiency syndrome (AIDS). With early testing and appropriate treatment, children

Depends on the site of infection. May include