In children, fever with cold feet and hot upper body is mainly related to the increase in body heat production, resulting in hot upper body and poor peripheral blood circulation, resulting in cold feet.
Fever in children is mostly caused by pathogens such as bacteria or viruses infecting the body, which can act as fever activators to stimulate the body to produce endogenous pyrogens.
Endogenous pyrogens can act on the thermoregulatory center to raise the thermoregulatory point, making the initial body temperature lower than the level of the thermoregulatory point. Therefore, the body will increase heat production to raise the body temperature in the early stage of fever, and therefore the upper body will be hot in the case of fever in children.
In addition, in order to raise the body temperature to reach the thermoregulation point, the body will be through the contraction of the skin capillaries, capillary blood flow to reduce the way to reduce the heat dissipation, and the child’s feet are farther away from the heart, the feet of the peripheral blood circulation is poor, so the symptoms of cold feet.
Children with fever feet cold upper body heat, there may be other reasons, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.