What causes fever after using air conditioning?

Fever generally refers to an elevated body temperature.发热 after using air conditioning may be caused by physiological responses, influenza, allergic rhinitis, acute pharyngitis, or acute suppurative tonsillitis. Timely treatment to prevent further increases in body temperature can help improve the condition.

1. Physiological Response

For some individuals, exposure to cold air from air conditioning can stimulate subcutaneous capillaries, causing spasmodic constriction that interferes with normal heat dissipation from the skin surface, leading to transient fever. In such cases, body temperature usually does not exceed 37.5°C. Adjusting the ambient temperature and drinking adequate water can help relieve symptoms.

2. Influenza (Flu)

Prolonged exposure to cold air can irritate the nasal mucosa and throat—upper respiratory tissues—reducing local immunity and increasing susceptibility to pathogens such as rhinoviruses and adenoviruses, resulting in influenza. Symptoms include runny nose, fever, and cough. Following medical advice to use antiviral medications can help alleviate the illness. Commonly used drugs include Ribavirin Granules, Oseltamivir Phosphate Granules, and Amantadine Hydrochloride Tablets.

3. Allergic Rhinitis

Air-conditioned environments are often enclosed, which can increase the concentration of airborne allergens. Repeated exposure to these allergens may trigger allergic rhinitis, provoking localized or systemic non-specific immune reactions that lead to symptoms such as fever and cough. As directed by a physician, antihistamines such as Loratadine Capsules, Levocetirizine Dihydrochloride Tablets, or Loratadine Syrup can promote recovery.

4. Acute Pharyngitis

Setting the air conditioner too low or too high can cause excessive moisture loss in the pharyngeal mucosa, weakening its protective function and triggering acute pharyngitis, which manifests as sore throat and fever. Under medical supervision, antibiotics such as Cefixime Capsules, Cefaclor Capsules, or Amoxicillin Capsules may be used to reduce inflammation and improve symptoms.

5. Acute Suppurative Tonsillitis

Exposure to air conditioning can lead to fluid loss in the body and increased contact with allergens and pathogens, potentially impairing immune function and triggering acute suppurative tonsillitis, causing fever and throat pain. Following a doctor’s guidance, antibiotics such as Levofloxacin Hydrochloride Capsules, Ampicillin Capsules, or Amoxicillin Capsules can help suppress pathogens and lower body temperature.

If fever occurs, prompt medical evaluation and treatment are recommended. Adhering to medical advice during treatment supports the return of body temperature to normal levels.