Why does the shoulder hurt when blowing a fan or catching a cold?

Generally speaking, the occurrence of scapulohumeral periarthritis is not only closely related to the lack of healthy qi in the elderly, but also mainly due to the invasion of cold and dampness on the shoulders, such as staying in the wetland for a long time and exposing the shoulders at night, which makes the blood vessels and muscles blocked by cold and dampness. Therefore, in summer, we should pay special attention to avoid the cold and the cool air of air conditioning blowing directly, and treat the symptoms as soon as possible after finding them, so as to reduce the pain and inconvenience caused by them. What should I pay attention to when blowing an electric fan? On a hot summer day, it's very pleasant to turn on the electric fan and the breeze blows on your face. Many people get sick because of improper use of electric fans. The reason is that many people lack common sense in using electric fans. Some people are too eager to be cool, so they put the electric fan close to their bodies and keep blowing for a long time. In this way, the sweat on the side that can blow to the wind evaporates quickly, and the body surface temperature drops obviously. On the unexposed side, sweat evaporates slowly, the skin temperature is relatively high, and the blood vessels on the body surface are still in a relaxed state, which eventually leads to imbalance of blood circulation and uneven sweat excretion, and may cause headaches, dizziness, general discomfort and other symptoms. In severe cases, it may even induce a stroke. When some people are too hot to sweat, they suddenly blow with an electric fan, which is easy to cause a cold; If you still blow an electric fan when you sleep, it is easy to cause a cold. How to use the fan correctly? First of all, the wind speed should not be too high: modern science believes that the indoor wind speed should be controlled at 0.2-0.5 m/s, especially in well-ventilated rooms and places with through flow, and the wind speed of electric fans should not be too high. Secondly, it is not appropriate to blow directly at people: direct blowing, the common cold is easy to invade the body, especially when the body is weak or sweating, it is best to let the electric fan blow at a corner; In addition, the electric fan should stop blowing, and it is advisable to use a shaking electric fan. For children, the elderly and the infirm, it is more appropriate to use electric fans to blow less, because "evil places will be empty", but the indoor airflow can be adjusted by electric fans to indirectly cool down. Finally, when sweating heavily, don't blow immediately when sitting or lying down, because at this time, the blood vessels on the surface of the whole body are dilated and suddenly blown by the cool wind, which often causes the blood vessels to contract and sweat immediately stops, thus making the heat generation and heat dissipation in the body out of balance, and the excess heat cannot be discharged from the body; In addition, after the cool wind blows, the local defense function decreases, and viruses and bacteria invade, which can cause upper respiratory tract infection, muscle and joint pain, and some even abdominal pain and diarrhea. In a word, you must pay attention to the method of using electric fans, otherwise good things will turn into bad things, which is not conducive to your health.