Fever with discomfort in muscles, bones, joints and skin
The normal core body temperature in humans is around 37 degrees Celsius, one speaks of fever from a rectally (in the anus) measured temperature of over 38.0 degrees Celsius, between 37.5 and 38 degrees Celsius one speaks of increased or subfebrile temperature. If the temperature is measured under the armpit, 37.6 degrees Celsius is considered a fever.
In women, the body temperature also fluctuates by up to 0.5 degrees Celsius over the course of the cycle. It is highest in the days shortly after ovulation.