From a Western medical point of view, the symptoms of headache and nausea may be caused by the air conditioning wind blowing against the body and head, resulting in vasoconstriction of the brain, which in turn affects the blood supply to the brain and causes a headache due to insufficient blood supply to the brain. For this situation, it is recommended to turn off the air conditioner or leave the air conditioner environment to avoid continued exposure to cold, open the window for ventilation, massage the head to see if it will relieve the symptoms of headache and nausea, pay attention to a light diet and ensure sufficient sleep during the period, if the symptoms are not relieved, or even getting worse, you must see a hospital for examination and treatment.