A baby’s oral temperature over 37.3℃, armpit temperature over 37℃, rectal temperature over 37.6℃, or a body temperature fluctuation of more than 1℃ throughout the day is considered a fever. Fever can be categorized into hyperpyrexia (body temperature above 41℃), high fever (above 38℃), and low fever (around 37-38℃).
A child’s body temperature is considered feverish if it exceeds 37℃. The range of different degrees of fever is low fever from 37℃ to 38℃, moderate fever from 38.1℃ to 39℃, high fever from 39.1℃ to 40.4℃, and hyperpyrexia above 40.3℃. For newborns, as their brain temperature regulation center is not yet fully developed, their body temperature may sometimes exceed 37℃, but it is still considered normal if it is below 37.5℃.
A 4-month-old baby’s normal body temperature is typically between 36.5℃ and 37.5℃ at the rectum, between 36.2℃ and 37.3℃ at the mouth, and between 35.9℃ and 37.2℃ under the armpit. A temperature above the normal range by more than 0.5℃ is considered fever.
The normal body temperature for infants ranges from 36.9℃ to 37.5℃. Generally, a temperature exceeding the baseline by more than 1℃ is considered fever. Low fever refers to temperatures around 38℃, while high fever is defined as temperatures above 39℃. Persistent fever lasting two weeks or more is classified as chronic fever. There are many causes of respiratory system infections in infants, so if a child is diagnosed with a pediatric respiratory system condition, parents should cooperate with the doctor for active treatment, assist with gastrointestinal decompression, and develop good hygiene habits. Parents should also be cautious not to allow children to develop picky eating habits and should provide a balanced diet.
Children’s body temperature is slightly higher than adults, averaging between 36.6℃ and 36.9℃. Temperatures below 37.5℃ are considered normal. In summer, some children’s armpit temperatures may be above 37℃, but long-term follow-up has not revealed any diseases. Therefore, there is no need to worry too much about slightly elevated temperatures. If the child has symptoms such as crying and restlessness, it is recommended to observe for other causes and consult a doctor in a timely manner.
The main transmission routes of Hepatitis B include blood transmission and maternal-infant vertical transmission. If both parents have Hepatitis B, the risk of their children contracting the disease increases.
Infants usually do not have their blood pressure measured unless they have a bleeding disorder, otherwise, blood pressure is generally not abnormal.
A 5-month-old baby with a low fever may be caused by inflammation. It is recommended that parents take their child to the hospital for further examination and treatment under a doctor’s guidance. At the same time, ensure the baby drinks plenty of water and maintains a comfortable body temperature.
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