What should I do if my child has a high fever over 39°C, cold hands and feet, and the fever won't go down?

High fever refers to a significant rise in body temperature. In general, when a child has a high fever of 39°C accompanied by persistently cold hands and feet that does not subside, it may be related to conditions such as viral influenza, chickenpox, meningitis, or other factors. It is recommended to identify the specific cause and treat accordingly with appropriate medication. Detailed analysis is as follows:

1. Viral Influenza

If a child's immune system is weak, viral infection can trigger fever inside the body. In severe cases, persistent high fever may occur along with symptoms such as cold limbs, fatigue, and general weakness. In such cases, consult a doctor for medications like ibuprofen suspension, acetaminophen suspension drops, or Lianhua Qingwen capsules. During treatment, ensure adequate warmth to maintain body temperature.

2. Chickenpox

Infection with the varicella-zoster virus damages the body’s immune system and disrupts normal temperature regulation, leading to high fever, chills, skin rashes, and red spots. It is recommended to use pediatric Chiao-chiao Qingre granules, acyclovir tablets, or vidarabine for injection under medical guidance. Appropriate medication can help control disease progression.

3. Meningitis

Infections caused by viruses, bacteria, fungi, or other pathogens lead to inflammatory infections in the meninges and subarachnoid space, resulting in symptoms such as high fever, chills, and headaches. When the fever is extremely high, peripheral blood circulation may deteriorate, causing cold hands and feet. After onset of symptoms, consult a physician for treatment with mannitol injection, bupleurum injection, or yanhusuo ning injection, and schedule regular follow-up examinations.

In addition, persistent high fever with cold extremities could also result from suppurative tonsillitis, pneumonia, measles, or similar conditions. Preventive measures should be taken during childhood development, and prompt medical attention should be sought once symptoms appear.