Fever (high body temperature - fever) is not a disease, but a symptom and indication of an infection in the body. 

Fever can be an initial expression of dozens of diseases of varying severity and severity, the vast majority of which are usually mild and, in most cases, disappear automatically.

 

A normal, normal body temperature is between 36 and 38 degrees Celsius. Body temperature varies depending on the age of the person and where the temperature is measured.

 In adults, body temperature is usually half a degree Celsius lower compared to children and young adults, and body temperature measured in the mouth is about half a degree lower than that measured in the rectum (from the anus). 

Therefore, any value above 37.5 ° C should be considered an increase in body temperature (fever).