Why do babies develop a fever when they have a cold?

May 08, 2025 Source: Cainiu Health
Dr. Zhou Xiaofeng
Introduction
A baby's cold and fever may be related to factors such as insufficient water intake, excessive physical activity, improper treatment, bacterial infection, or viral infection. It is recommended to relieve symptoms by increasing fluid intake, getting appropriate rest, and seeking timely treatment. If necessary, follow medical advice promptly to use antibiotics or antiviral medications, and avoid exposure to causative factors.

Generally speaking, fever refers to an elevated body temperature. When a baby has a cold accompanied by fever, it may be related to factors such as insufficient water intake, excessive physical activity, improper treatment, bacterial infection, or viral infection. If discomfort occurs, timely medical attention is needed. The detailed analysis is as follows:

1. Insufficient Water Intake

A cold may cause increased body heat in babies. If the body lacks sufficient water and is not replenished timely during illness, it may lead to excessive fluid loss and subsequent fever. Therefore, it is recommended to give the baby more water regularly to maintain adequate hydration.

2. Excessive Physical Activity

Due to babies' rapid metabolism and high levels of daily activity, a significant amount of body heat may be generated. If the body fails to dissipate heat effectively, body temperature may rise above the normal range. Thus, it is important for babies to rest properly and reduce physical activity when having a cold.

3. Improper Treatment

If a cold is not treated promptly, the condition may progress and lead to fever, even high fever. Timely and appropriate medical treatment should be administered, such as using medications like acetaminophen chlorpheniramine maleate granules, common cold granules for children, or Pudilan Xiaoyan Oral Liquid, as directed by a physician.

4. Bacterial Infection

A cold may be caused by bacterial infection, such as Staphylococcus aureus or Streptococcus pneumoniae. When bacteria continuously stimulate the body, they may trigger inflammatory responses, leading to elevated body temperature. This may also cause symptoms like sore throat and loss of appetite. It is necessary to follow medical advice and promptly use antibiotics such as amoxicillin granules, cefixime granules, or cefaclor granules for treatment.

5. Viral Infection

A cold may also be caused by viral infection, such as respiratory syncytial virus or influenza virus. These viruses can stimulate the body and cause fever, leading to symptoms like fatigue and headache. Prompt treatment with medications like ribavirin granules, antiviral granules, or Lianhua Qingwen granules should be administered as directed by a physician.

Digestive function may be affected during a cold, so caregivers should provide easily digestible foods such as porridge, noodles, and fruit juice. Avoid feeding the baby greasy or spicy foods that may加重 gastrointestinal burden.