"Meteorological disease" affected by weather

Association of weather in Hokkaido announced about "Meteorological disease." Do you know hat is this?I think everyone have experienced once.This symptom is caused by change of sudden temperature.For example, you feel a pain of your damaged legs in rainy days, or feel irritation in hot day.I didn't know about this fact, so I was surprised that is "disease".Recently days, the weather is not stable. One day is hot, one day is cold.I can't keep up with ups and downs.Maybe someone caught a cold.Even if you aren't, you probably need to be careful.I hope you won't be sick. Take care!