Is a child's body temperature of 35.9°C normal, and what should be done?

A body temperature of 35.9°C in a child may or may not be normal, depending on specific circumstances. If abnormal, appropriate measures should be taken based on the underlying cause, while closely monitoring temperature changes. Common causes include hypoglycemia and hypothyroidism. Detailed analysis is as follows:

1. Is it normal?

1. Normal
If the low temperature results from physiological factors such as excessive sweating or wearing insufficient clothing, and there are no symptoms like weakness, dizziness, or discomfort, it is considered normal.

2. Abnormal
When body temperature falls below the normal range and is accompanied by noticeable symptoms such as shivering, lethargy, or reduced appetite, it is generally considered abnormal.

2. Management Measures

1. Hypoglycemia
Hypoglycemia occurs when blood glucose levels drop below normal due to factors such as medications or improper diet. In such cases, discontinue any medications that may affect blood sugar under medical guidance, and consume high-sugar foods such as rock sugar or honey to help raise blood glucose and relieve symptoms. If unconsciousness occurs, glucocorticoids such as dexamethasone injection, compound betamethasone injection, or hydrocortisone injection may be required under medical supervision to correct blood glucose levels and support recovery.

2. Hypothyroidism
Hypothyroidism, caused by insufficient production or secretion of thyroid hormones, can easily lead to low body temperature. Staying warm, getting adequate rest, and improving nutritional intake can help alleviate symptoms. Under medical guidance, medications such as triiodothyronine dilute solution or levothyroxine sodium tablets can be used to supplement thyroid hormones, enhance metabolic activity, and normalize body temperature.

3. Mycoplasma Pneumonia
Mycoplasma infection leading to mycoplasma pneumonia, especially in severe cases, can disrupt systemic microcirculation and increase heat loss, resulting in significantly lowered body temperature. It is important to follow a doctor’s instructions to use antibiotics such as moxifloxacin capsules, azithromycin granules, or doxycycline capsules to suppress the pathogen and relieve symptoms. Additionally, oxygen therapy via nasal cannula or face mask is recommended to improve blood oxygen levels and promote recovery.

Low body temperature may also be caused by sepsis. While monitoring temperature changes, following standardized medical treatment as directed by a physician can help restore normal temperature.