Symptoms of frostbite

summary

It's a cold winter now. I think many people, like Xiaobian, are reluctant to give up their warm bedclothes. Getting up every day is like experiencing a life and death. However, I still have to get up. After all, poverty makes me have to get up early. I'm also very desperate. In such a sad time, The most important thing for friends is to do their own protective measures, so as not to be more sad and not to have frostbite. So, what are the symptoms of frostbite? Let's talk about it

Symptoms of frostbite

Frostbite often occurs in the back of the hand, the edge of the fingers, ears and toes and other parts. The skin of the affected area will be damaged, red and swollen, and the middle part will be purplish red, while the edge is light red, and there is no congestion phenomenon. It is usually acute and occurs suddenly. It occurs frequently in spring and autumn.

Frostbite's surface luster is dual. Press down to see the color push off, loosen and gradually recover. Severe patients may have blisters, break and form erosion or ulcers. Even after the wound is healed, the residual pigment will settle in the skin, or there will be atrophic spots.

Frostbite mainly occurs in the cold winter. The sharp drop of temperature causes the contraction of blood vessels at the end of hands and feet. Because the peripheral blood vessels are the farthest part of the centrifugal viscera, the contraction of blood vessels will lead to the slow flow of blood. Even if the blood is blocked directly at that part, the body will naturally have problems, and the supply of oxygen and nutrition is insufficient, As a result, some damage has occurred to the tissues of the body.

matters needing attention

1. Take cold resistance exercise in daily life, such as washing face in cold water, washing feet in cold water, or swimming in winter. 2. Keep your limbs warm and dry when working in cold environment. 3. Hands, feet, ears, nose and other exposed parts should be protected, shoes and socks should not be too tight. 4. Working time in cold environment should not be too long. 5. It is not suitable to heat or bake immediately after being frozen to prevent ulceration.