Dry and itchy skin
Direct cold air from an air conditioner, followed by sun exposure, can cause flaky and dry skin, which leads to itching and other skin issues.
Dehydration
Air conditioners can make the air dry and, after a certain time, cause dehydration in the body. Make sure you drink enough water in the summer and turn off the AC from time to time.
Headaches
The cold air, along with the noise and dehydration, can induce headaches and cause dizziness and nausea.
Dry eyes
Air conditioners can cause dehydration and remove moisture from the air. This can irritate the eyes and cause dryness.
Indoor pollutants
Air-conditioned rooms with improper ventilation can be a home to air-borne pathogens and can worsen allergies and cause infections.