Fever cause and symptoms
Fever Overview Fever is a temporary increase in body temperature, usually due to an illness or infection. The normal body temperature range is generally considered to be between 97 °F (36.1 °C) and 99 °F (37.2 °C). A fever is typically considered to be a temperature above 100.4 °F (38 °C). Fever can be caused by a variety of factors, including infections (such as the flu or pneumonia), autoimmune disorders, certain medications, heat exhaustion, and more. It is a natural response by the body to fight off infections or other foreign invaders. Treatment for fever typically involves treating the underlying cause, such as with antibiotics for a bacterial infection, and managing symptoms with over-the-counter medications like acetaminophen or ibuprofen. While fever itself is usually not a cause for concern, extremely high fevers (above 104 °F or 40 °C) can be dangerous and require immediate medical attention. A...