Symptoms of frostbite

summary

In the cold winter, many people's hands are not handled properly and they don't pay attention to keeping warm, which can easily lead to chilblain. In fact, chilblain has a serious impact on many people. Chilblain can cause redness and swelling of the whole hand, numbness in work and study, and unsightly scars. This also has a great impact on many patients, Because after chilblain is good, generally the hand will leave the black mark, this kind of black mark has brought the esthetic influence to the beauty lovers. Today, let's learn about the basic symptoms of chilblain

Symptoms of frostbite

First: the precursor of long frostbite, local itching is the most direct precursor of long frostbite, because after the skin is stimulated by cold, the blood vessels contract for a long time, leading to blood circulation. After a warm environment, the blood vessels begin to expand when they meet heat, and the skin will feel itchy, and only the local skin will feel itchy.

Second: local cold skin is the precursor of frostbite. Subcutaneous blood vessels are stimulated and contracted under cold air. The blood in this area does not circulate, so it is difficult for local skin to heat itself. Therefore, before the appearance of frostbite, this area of skin is always very cold, because the blood can not flow to this area.

Third: chilblain usually occurs in the extremities such as hands, feet, cheeks and so on. The skin lesions are itchy, localized, edematous erythema. The boundary is unclear. Blisters, erosion and ulcers may appear. Chilblain is localized at the beginning. The red mass or induration of the size of nail cap, the edge is bright red, the center is blue and purple, the ice is cold, the pressure is faded, and local itching, swelling and burning will appear, Especially in the warm quilt inside more itchy.

matters needing attention

Frostbite can sometimes be complicated with infection, so once frostbite occurs in the cold season, it is often difficult to cure, and it will gradually heal after the day is warm. To reduce the occurrence of frostbite, the key is to do a good job in the prevention of exercise, and pay attention to the warmth of hands.