On rainy days, what should I do if my old injury hurts?

Grandpa Wang suffered a chest injury in the war. After the operation, he left a big scar: Master Han was a model worker, and his right leg was crushed by the machine in the factory. After treatment, he also left a scar. When it rains or the weather changes suddenly, Grandpa Wang and Master Han's old injuries will have different degrees of pain or discomfort. In fact, many people who have suffered serious trauma, surgery or fracture have the same experience. So, why do these old injuries cause pain or discomfort when the weather changes?

It turns out that after fracture, injury or operation, the skin and subcutaneous tissue at the wound will form scars. There are countless tiny nerve fibers in the scar, which are quite sensitive to the change of external climate.

When the air is cold and humid, the stimulation of cold and humid can make scar tissue and its nearby muscles and blood vessels contract, resulting in local blood supply deficiency and reducing the tolerance of scar tissue to pain; On the other hand, scar tissue will shrink or relax with climate change, which will stimulate nerve fibers to squeeze or pull, which can lead to old injuries and pains.

In order to prevent and relieve the pain of old injuries, patients with old injuries should do the following:

1, pay attention to listen to or watch the weather forecast, add or subtract clothes and quilts at any time according to climate change, and do a good job of keeping warm and cold.

2, indoor should be kept dry, don't often stay in wet places. Go out as little as possible in rainy days, and use all conditions to do dehumidification and heat preservation work (dehumidification can be heated indoors or air conditioning can be used).

3, usually should massage, rub old wounds, to promote the blood circulation of scars. Local massage can also enhance the tolerance of old injuries to cold and humidity.

4. After the old wound has pain or discomfort, the patient can use related drugs for treatment under the guidance of a doctor, such as external application of rheumatism ointment and safflower oil to the old wound; Or oral Sanqi tablets, Fenbid and other analgesic drugs. You can also mash an appropriate amount of leek, stir-fry it in a pot, add a little soju and mix well, apply it to the old wound while it is hot, wrap it with gauze, and change the medicine once a day for several days; Or boil water with Folium Artemisiae Argyi, and soak or hot compress the old wound with this water while it is hot. These methods have good analgesic effect on the pain of old injuries.