The occurrence of a body temperature of 35.5 degrees does not indicate a fever at all, but rather some mild hypothermia. It is more common to measure the temperature in the armpit, the normal temperature range is between 36-37 degrees, only over 37 degrees is considered a fever. A temperature of 35.5 degrees indicates hypothermia, and it is important to find out the cause of the hypothermia and treat it. If the temperature is measured in the mouth, the temperature is higher than that measured in the armpits, 35.5 degrees is not a sign of fever, the normal temperature of the mouth is between 36.3-37.2 degrees. If the temperature is measured in the anus, which is the closest to the internal temperature of the body, and is the part of the body with the highest temperature, it tends to be between 36.5-37.7 degrees, and only more than 37.7 degrees is considered to be a case of fever. So the body temperature is 35.5 degrees when you need to measure the body temperature, to ensure that the method of measurement is not wrong, and generally will not appear the body temperature is low.