The child has repeated fever within one month

Nowadays, most colds are caused by bacteria. Babies are young, do not know how to maintain hygiene, and have poor resistance, so they also become a group that is prone to colds. There is no need to worry too much if the baby has a minor cold, but if the baby continues to have a fever for a month, parents need to be very careful and take the baby to the hospital for treatment in time. But what is the cause of recurring fever?

1. Non-infectious fever: It is not caused by various infectious diseases. It is caused by sterile substances or various inflammations acting on the body temperature regulation center, dysfunction of the body temperature center, or various reasons causing excessive heat production and reduced heat dissipation, resulting in a body temperature exceeding the normal range.

2. Fever of unknown cause: The broad concept of fever of unknown cause refers to all people with fever of unknown cause. However, the narrow concept of fever is still used clinically, that is, fever of unknown cause. Fever persists for more than 3 weeks, with body temperature above 38.5℃, and a clear diagnosis cannot be made after detailed medical history, physical examination and routine laboratory tests.

3. Central fever: refers to the fever caused by abnormalities in the body temperature regulation center due to lesions in the central nervous system. Before diagnosing it, fever caused by systemic or local inflammation and other causes of fever should be strictly excluded. Intracranial diseases accompanied by fever are mostly critical cases, and the fever in most patients is caused by intracranial inflammation, lung infection, and urinary tract infection. For those with unexplained moderate fever whose source or cause of infection cannot be found at the moment, it should not be easily assumed to be central fever. Systemic or local infection causes should be repeatedly sought to exclude them, and attention should be paid to drug fever and other causes of fever.

4. Persistent fever: When the oral temperature is higher than 37.3℃ or the rectal temperature is higher than 37.6℃, and the change in one day exceeds 1.2℃, it is called fever. According to the degree of fever, it can be divided into the following clinical grades: low fever 37.4℃～38℃, moderate fever 38.1℃～39℃, high fever 39.1℃～41℃, and ultra-high fever above 41℃, which lasts for more than 4 weeks, is persistent fever.