Fever is an elevation of body temperature that exceeds the normal Daily variation and occurs in conjunction with an increase in hypthalamic set point. A fever of >106.7°F is called Hyperpyrexia which can develop in patients with severe infections and CNS hemorrhages. A variety of bacterial & viral microorganisms can lead to fever. Other causes may be trauma, hemorrhage, tumors or intrinsic hypothalamic malfunction.
Pre Test Information: Overnight fasting is preferred.