As the weather gradually warms up, scars gradually begin to itch and hurt, and even proliferate. Proliferative scar tissue is quite sensitive to the physical and chemical factors of the surrounding environment, when there are changes in the outside world, the scar will show a corresponding response, pain and itching is particularly obvious. Spring cold and warm change is unpredictable, will stimulate the scar within the nerve fibers, coupled with accelerated metabolism, accelerated blood supply to the scar, the dry climate scar cracking, will increase the pain and itching of the scar. Why itchy phenomenon: With the spring human metabolism began to accelerate, blood circulation accelerated, scar fibroblasts overgrowth, especially after eating spicy stimulating food, will lead to scar local swelling and congestion increased. Then there is a dry climate in the spring, the epidermis of the scar is also a kind of stimulation, the scar will also be itchy. Scars itch, should avoid the following misunderstandings: 1, itchy scratch, and then wash with hot water. This method is wrong, any scratching or even friction, or washing with hot water, is a strong stimulus to the scar, so it is easy to make the scar tissue inflammatory reaction, the itch is intensified, and even cause infection. 2, random use of topical drugs to stop itching. Be careful when choosing to apply topical medications to stop itching. Many of the drugs that have an effect on scar itching and softening contain hormones, and hormone drugs have certain side effects, and the risk of using them under the guidance of non-professional doctors will be great! 3, the wound healing will not itch. Wound itching is not only because of the growth of granulation tissue may also be because the scar is proliferating, blood vessels, nerves and connective tissue within the tissue due to excessive proliferation, disordered arrangement, particularly sensitive to stimuli in the external environment, the slightest stimulus will be itchy.