Axillary body temperature 37.6℃

Under normal circumstances, an axillary temperature of 37.6°C is considered abnormal and indicates fever, which may be caused by heatstroke, upper respiratory tract infection, fracture, intestinal infection, vascular embolism, or other reasons. Symptomatic treatment is required. Specific analyses are as follows:

1. Heatstroke

High temperatures can impair the function of the body's thermoregulatory center, disrupting thermal balance. This leads to excessive heat accumulation in the body, reduced heat dissipation, and a state where heat production exceeds heat loss, resulting in fever. When heatstroke occurs, the patient should immediately be moved to a cool, well-ventilated indoor environment, avoiding prolonged exposure to direct sunlight. If indoor temperatures remain high, air conditioning or electric fans should be used to lower the room temperature.

2. Upper Respiratory Tract Infection

Upper respiratory tract infections are mostly caused by decreased individual immunity and bacterial infections such as *Haemophilus influenzae*, *Streptococcus pneumoniae*, and *Staphylococcus*. These pathogens irritate the mucous membranes of the upper respiratory tract, triggering local inflammatory responses and symptoms including coughing, runny nose, sneezing, and fever. Patients may take medications such as amoxicillin capsules or azithromycin capsules as directed by a physician.

3. Fracture

Fever following a fracture is typically due to absorption of local hematoma or the body's stress response to trauma. This type of fever is usually short-lived; however, if it persists, there may be a risk of infection. After fracture immobilization, patients can use physical cooling methods to alleviate symptoms, or take medications such as ibuprofen sustained-release capsules or diclofenac sodium enteric-coated tablets under the guidance of a healthcare professional.

4. Intestinal Infection

Intestinal infections are generally caused by bacteria and may present with fever, diarrhea, abdominal pain, and other symptoms. Anti-infective treatment with antibiotics such as levofloxacin tablets or norfloxacin capsules may be administered according to medical advice.

5. Vascular Embolism

Vascular embolism mainly occurs when local arterial blockage leads to tissue necrosis and subsequent local infection, causing fever. Anti-infective medications such as levofloxacin tablets or amoxicillin capsules may be used as prescribed to prevent worsening of the infection.

Patients are advised to seek timely medical attention when experiencing discomfort and receive standardized treatment under the guidance of a doctor, which helps promote recovery.