Why does rheumatism hurt the waist and legs in rainy and cloudy days?

Rheumatism tends to get worse when it rains on cloudy days or the weather changes. However, the onset of rheumatism is not only the external cause of climate change, but also the internal and external causes.

According to experts, rheumatism is called "joint pain". "Neijing" says that "rheumatism and cold are mixed, and they are combined into arthralgia". That is, three kinds of external "evil spirits" invade the human body, inject into meridians, and detain joints, so that qi and blood are blocked and become arthralgia syndrome. However, it is believed that the occurrence of rheumatism mainly stems from the physical quality of the human body itself. When people are short of qi and blood or overworked, "exogenous evil" will take advantage of it to stagnate qi and blood, resulting in pain in joints and other parts.

Modern medicine also believes that rheumatism is related to the immune dysfunction of patients, but weather changes will also aggravate rheumatism. Because rheumatism patients' joints and their peripheral blood vessels and nerves are not functional, blood vessels can not be fully relaxed and contracted, and skin temperature rises and falls slowly. When wet, the stimulation of increased humidity will enhance the sensitivity of joint nerves; However, cold will make muscles stiff, blood flow slowly, and some protein substances in blood and synovial fluid will increase, which will increase the viscosity of synovial fluid, thus hindering joint activities and causing or aggravating pain.