What causes recurrent fever in children?
Sep 05, 2025
Source: Cainiu Health
Dr. Zhou Xiaofeng
Introduction
Under normal circumstances, the main causes of repeated fever in children include environmental temperature fluctuations, underdeveloped immune function, acute upper respiratory tract infections, pneumonia, and Kawasaki disease. If discomfort symptoms occur, it is recommended to seek timely medical treatment at a正规 hospital. In daily life, attention should be paid to maintaining good indoor air circulation and avoiding taking children to crowded places; clothing should be adjusted according to seasonal changes.
Generally, the main causes of recurrent fever in children include environmental temperature fluctuations, underdeveloped immune function, acute upper respiratory tract infection, pneumonia, Kawasaki disease, and others. If discomfort symptoms occur, it is recommended to seek timely medical treatment at a qualified hospital. Detailed analysis is as follows:
1. Environmental Temperature Fluctuations
Significant changes in the environmental temperature surrounding the child or improper adjustment of clothing may cause body heat dissipation imbalance, leading to recurring fever. It is important to maintain a stable indoor temperature between 22-26°C, adjust clothing according to the weather, and use warm water to wipe areas such as the forehead and armpits for physical cooling when fever occurs.
2. Underdeveloped Immune Function
Children's immune systems have not fully matured, and their resistance is relatively weak, making them susceptible to repeated pathogen attacks, which can lead to recurring fever. In daily life, it is important to ensure the child receives balanced nutrition, eats more foods rich in protein and vitamins, and engages in appropriate outdoor activities to enhance physical fitness.
3. Acute Upper Respiratory Tract Infection
Repeated viral or bacterial infections of the upper respiratory tract can cause inflammation, with inflammatory stimulation leading to recurring fever, often accompanied by symptoms such as coughing and nasal congestion. Medications such as children's paracetamol and chlorpheniramine granules, cefaclor dry suspension, and ribavirin granules should be taken under a doctor's guidance to fight infection and relieve symptoms. Additionally, ensure the child rests sufficiently and drinks plenty of water to promote recovery.
4. Pneumonia
Infection of the lungs by bacteria, viruses, or other pathogens can lead to pneumonia, with persistent inflammation causing recurring fever, which may also be accompanied by rapid breathing and phlegm production. Prompt medical attention is necessary, and medications such as ceftriaxone sodium for injection, penicillin sodium for injection, and acyclovir injection should be used under a doctor's guidance to fight infection. If coughing with excessive phlegm occurs, ambroxol and terbutaline oral solution can be used in combination to alleviate symptoms.
5. Kawasaki Disease
The exact cause is not yet fully understood, but it may be related to infection and abnormal immune response. Recurrent high fever accompanied by symptoms such as rash and swollen lymph nodes may occur after onset. Medications such as aspirin enteric-coated tablets, intravenous immunoglobulin, and dipyridamole tablets should be taken under a doctor's guidance to suppress inflammation and prevent coronary artery lesions. If a coronary artery aneurysm develops, coronary artery bypass surgery may be required.
In daily life, it is important to maintain good indoor air circulation and avoid taking children to crowded places; adjust clothing promptly according to seasonal changes to prevent colds; regularly take children for vaccinations to reduce infection risks; closely monitor body temperature when children have a fever, and promptly implement cooling measures to maintain the child's health.
