Why do I have body aches all over after using air conditioning or a fan?

Generalized body aches from using air conditioners or fans may be related to chilling, blood vessel constriction, respiratory tract infections, and other causes.

1. Chilling

If wearing too little clothing while using an air conditioner allows cold air to enter the body, it may trigger an inflammatory response leading to muscle soreness. This may also be accompanied by symptoms such as runny nose and sneezing. If symptoms are mild, they can be relieved by dressing more warmly.

2. Blood Vessel Constriction

Using an air conditioner can lower body temperature, which may cause blood vessels to constrict. This constriction can impair circulation, resulting in generalized body aches. Generally, discomfort can be alleviated by avoiding direct exposure to cold airflow.

3. Respiratory Tract Infection

If the immune system is weakened and a respiratory infection develops, symptoms such as fever and cough may occur. Exposure to air conditioning under these conditions may worsen the body's inflammatory response, potentially causing inflammatory exudation and resulting in whole-body aches. In severe cases, medications such as oseltamivir phosphate tablets or ribavirin granules may be used under a doctor’s guidance.

In addition, generalized body aches associated with air conditioner or fan use could indicate "air conditioner sickness." It is advisable to visit a hospital for evaluation and receive appropriate treatment based on specific symptoms.