Fever refers to an increase in normal body temperature and is not normally a disease in its own right. Rather, fever is understood as a body reaction to external (for example, infections) or internal (such as tumors) influences. Thus, fever supports the immune system in its function.
As a rule, one can assume that the body temperature in the morning is about 36.5°C (rectal), 32.2°C (oral) and 36.0°C (axillary). During the day, the temperature increases by about one degree Celsius until it finally reaches its maximum value (maximum) in the late afternoon.
It should be noted, however, that the above values are only average values. The body temperature can show strong fluctuations in different (healthy) people. In addition, many factors, such as stress, exercise, caffeine, diet, and certain medications, can affect temperature. M
ou can distinguish between different types of fever:
- Elevated temperature (no fever yet): below 38°C (measured rectally).
- Moderate fever: up to 39°C (measured rectally)
- High fever: over 39°C (measured rectally)