What should I do if a child has a fever and cold hands and feet?

Generally, cold hands and feet in children with fever may be caused by factors such as vasoconstriction during the rising phase of body temperature, immature nervous system development, acute upper respiratory tract infection, acute gastroenteritis, or Kawasaki disease. If discomfort symptoms occur, it is recommended to seek timely medical evaluation and treatment at a正规 hospital. Specific analyses are as follows:

1. Vasoconstriction during the rising phase of body temperature: In the early stage of fever, the thermoregulatory center sends signals causing blood vessels to constrict, prioritizing blood supply to internal organs while reducing blood flow to the extremities, leading to cold hands and feet. Soaking the hands and feet in warm water, dressing appropriately, and drinking plenty of warm water can help improve circulation.

2. Immature nervous system development: The nerves responsible for temperature regulation are not fully mature, making vascular constriction and dilation functions prone to dysfunction during fever, resulting in cold hands and feet. Wipe the hands and feet with a warm towel, maintain a warm indoor environment, and avoid sudden changes in ambient temperature.

3. Acute upper respiratory tract infection: Fever caused by viral or bacterial infections, with toxins affecting circulation leading to cold extremities. When body temperature exceeds 38.5°C, medications such as acetaminophen suspension drops, ibuprofen suspension, or pediatric paracetamol-phenylephrine granules may be used according to doctor's instructions. Ensure adequate rest and hydration.

4. Acute gastroenteritis: Inflammation due to infection or improper diet leads to vomiting, diarrhea, dehydration, and fever, with cold hands and feet resulting from poor circulation. Medications such as smectite powder, cefaclor dry suspension, and oral rehydration salts III may be used under medical guidance. Maintain a light diet and avoid greasy foods.

5. Kawasaki disease: An abnormal immune response causes vasculitis, presenting with fever, cold hands and feet, rash, and other symptoms. Treatment under medical supervision may include enteric-coated aspirin tablets, intravenous immunoglobulin, and dipyridamole tablets. Coronary artery bypass surgery may be required in severe cases.

In daily life, pay attention to adjusting clothing according to temperature; maintain hygienic and regular eating habits to strengthen immunity; undergo regular health check-ups, closely monitor body temperature during fever, and seek medical care promptly if abnormalities occur.