As the midsummer heat intensifies, many people find themselves running their air conditioners all day long. However, if you experience headaches, cold hands and feet, or chills while staying cool indoors, it might be more than just fatigue. Air conditioning sickness, or 'naengbangbyeong' in Korean, can occur when the body's autonomic nervous system gets out of balance due to the significant temperature difference between indoors and outdoors, and prolonged exposure to cold air.

Various Symptoms of Air Conditioning Sickness

Air conditioning sickness isn't just about feeling cold. It can manifest with a range of symptoms, including:

• Headaches
• Fatigue
• Dizziness
• Numbness in hands and feet
• Stiff neck and shoulders
• Body aches
• Indigestion and stomach pain

Certain groups, such as women, the elderly, and those with a slender build, are more susceptible to these symptoms because their bodies are less efficient at maintaining core temperature. If your symptoms don't improve within a day or two and keep recurring, it's a good idea to review your lifestyle habits. If you experience a high fever, severe cough, or difficulty breathing, it could indicate another underlying condition, so it's crucial to seek professional medical advice.

Causes of Air Conditioning Sickness and the Role of the Autonomic Nervous System

The primary cause of air conditioning sickness is not so much the low indoor temperature itself, but rather the drastic temperature difference between indoors and outdoors. For instance, if it's 35℃ outside and you set your indoor temperature to 20℃, your blood vessels repeatedly constrict and dilate. This puts a strain on your autonomic nervous system, potentially leading to headaches, fatigue, and decreased concentration. Muscle tension can also develop, causing neck and shoulder pain.

Furthermore, if the air conditioner's cool breeze directly hits your face, neck, lower back, or knees, your body temperature can drop more rapidly, worsening symptoms. Dust and mold accumulated in the air conditioner filters can also exacerbate respiratory issues, so be mindful of this.

Tips for Preventing Air Conditioning Sickness

To prevent air conditioning sickness, it's important to follow a few simple guidelines:

• Maintain an indoor temperature of around 24-26℃ (75-79℉), keeping the difference between indoor and outdoor temperatures within 5-8℃ (9-14℉).
• Adjust the air conditioner to blow towards the ceiling, avoiding direct airflow onto people.
• Open windows for at least 10 minutes every 1-2 hours to ventilate and improve indoor air quality.
• Use a light cardigan or a knee blanket to protect your shoulders and abdomen.
• Opt for lukewarm water or warm tea instead of iced beverages to help maintain your body temperature.
• Incorporate light stretching or a 10-20 minute walk once or twice a day to improve blood circulation.

By following these simple preventive measures, you can protect yourself from air conditioning sickness and enjoy a more comfortable summer. Let's all work together to have a healthy summer!