What symptom is chilblain?

summary

In the cold winter, many people's hands due to improper handling, do not pay attention to warmth, it is easy to lead to frostbite, in fact, frostbite has brought a serious impact to many people, frostbite will make the whole hand red and swollen phenomenon, appear in work and study when the phenomenon of numbness, frostbite will leave ugly scars, what are the symptoms of frostbite? Now let me tell you something.

What symptom is chilblain?

Long frostbite precursor, local itching is the most direct precursor of long frostbite, because the skin was stimulated by cold, blood vessels contracted for a long time, leading to blood circulation, hit the warm environment, blood vessels began to expand when hot, the skin will feel itchy, and only local skin will feel itchy.

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.

Chilblain usually occurs in the peripheral parts such as hands, feet, cheeks and so on. The skin lesions are itchy, localized, edematous erythema. The boundary is not clear. Blisters, erosion and ulcers may appear. Chilblain is localized at the beginning. There are red masses or induration of the size of nail cap. The edge is bright red. The center is blue and purple. It is cold and discolored. 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.