Fever in adults - Harvard Health - adult 100.4 temperature stiff neck

Fever means a body temperature of 100.4° F (38°C) or higher. confusion; stiff neck; trouble breathing; severe pain anywhere in the body.

Care guide for Fever in Adults. Includes: possible Fever is generally defined as greater than 100.4°F (38°C). You have a stiff neck and a bad headache.

A fever is a body temperature of 100.4 F or greater. Read about causes of fever in adults, symptoms, treatment, medications that may cause fevers, If a person has the combination of a fever, severe headache, and stiff neck, he or she should .