What are the causes of fever? The most common cause of fever in children is to feel the abnormal weather outside, such as the change of seasons, not increasing or decreasing clothes in time, getting cold outside in winter, not drying in time after bathing, or blowing air conditioner after sweating in summer and eating a lot of cold drinks in summer. These children will also have a stuffy nose, runny nose, sneezing, muscle aches and other cold symptoms. Some children may experience abnormal digestive functions such as vomiting and diarrhea. Another important reason is various infectious diseases. Many parents have this feeling that their children tend to get sick once they go to school, where there is a high concentration of children, and once they are infected with bacteria and viruses, it is easy for them to spread. Common diseases are measles, chicken pox, influenza, hand, foot and mouth disease, etc. Another reason is diet. Some children have fever after overeating, some children have a long-term loss of appetite and bad breath, and are prone to repeated fever, and some children have fever that does not go away after eating cold drinks, all of which are related to injury to the spleen and stomach, and the upper part of the heat cannot go down, and fever is not easily treated. How can I tell if my child has a fever? Many parents do not know how their children are considered feverish, often parents say that they feel their children’s foreheads are hot, the palms of their hands are hot, etc., so they hold to the hospital to check, but the results do not have any problems, not to mention the alarm, normal children to the hospital also increased the risk of infection disease. So how can you tell if you have a fever at home, is it a fever if your hands are hot and not a fever if your hands are cold? The first thing is to pay attention to the child’s condition. If the child suddenly appears to be depressed, or suddenly has a loss of appetite, attention should be paid to the possibility of fever. Suspected of fever should pay attention to touch the child’s neck and stomach, rather than the first to touch the hands and feet and forehead, because many children in high fever when the hands and feet cold, forehead after blowing the temperature drop, but also easy to touch inaccurate, it is best to both sides of the neck and stomach, where there are more large blood vessels, the temperature is more real. Of course, if you have a thermometer at hand to directly measure the temperature is more accurate, the general mercury thermometer can be, clip in the armpit or neck for about five minutes can be, older children with the words can also be measured oral temperature, mercury end under the tongue. The anal thermometer can also measure the anal temperature. After the thermometer is taken out many parents do not know what temperature is considered fever, some say it is too much trouble to add and subtract, in the end how should it be? Generally speaking, the axillary temperature is 36.4-37.3 degrees Celsius as the normal body temperature, the difference between the axillary temperature and the anal temperature is about 0.5 degrees Celsius, and the oral cavity is about 0.3 degrees Celsius, for example, the axillary temperature of 37 degrees Celsius is equivalent to the hand anal temperature of 37.5 degrees Celsius, equivalent to the oral cavity of 37.3 degrees Celsius, these are normal temperatures.