How does western medicine explain back pain in rainy days?

I have a backache on rainy days. In fact, the explanation of western medicine is very simple. It is because the air suddenly changes, the weather suddenly turns cloudy and rainy, some ions in the air increase or decrease, and the body does not adapt, resulting in backache and leg pain. The explanation of western medicine is so much. Later, doctors in Chinese medicine hospital said it was rheumatoid, but peace was often related to it. As all my female friends know, when I have my period, my stomach hurts as well as my waist. Some of the pain has just begun. Some of them began to have back pain. There are many reasons, such as eating spicy strips and washing feet with cold water during this period, bathing and washing your hair during this period, and getting cold at your waist will all lead to back pain. The pain after that is not in the coming period, but in the days before coming and after leaving, which may last for a long time, especially in rainy days. The explanation of western medicine is very simple, which also explains various problems, because as we all know, not everyone has a backache on rainy days. These people with backache in rainy days are generally elderly or middle-aged, with few children. These may be because at ordinary times. In fact, not only girls but also boys should pay attention to keep warm. Although boys don't have a big aunt, if they catch a cold, it will also lead to backache and then get rheumatoid. As we all know, boys generally do more work than girls, because the important task of bringing home the bacon is placed on boys' shoulders. Working hard for a long time requires a lot of strength in the waist, and they will get rheumatism after a long time. In fact, low back pain is due to heavy work, so proper massage is needed. Western medicine rarely explains the causes of low back pain in rainy days, but we all know that if we don't pay attention to keep warm, it will hurt in rainy days, especially when we are old. People also say that it is necessary to keep warm during menstruation, which is actually correct, otherwise it will lead to low back pain in rainy days.