Why does an old wound hurt when it rains?

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 wound pain.

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 do more massage, massage, rubbing 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 analgesic drugs such as Sanqi tablets and Fenbid can be used as hot compress, massage and massage in traditional Chinese medicine. These therapies have a significant effect on eliminating the pain of old injuries.