non-freezing cold injury
Introduction
Introduction to non-frozen cold injuries Non-frozen cold injury is cold injury caused by low temperature and humidity conditions below 10 °C to above freezing point, such as frostbite, warping foot, and dipping foot. After the occurrence of frostbite, the local epidermis may be coated with frostbite cream and applied several times a day. Those who have erosion or ulcers can use ointments containing antibacterial and corticosteroids, as well as frostbite cream. In addition to local treatment, it is advisable to use some traditional Chinese medicines for warming meridians, promoting blood circulation and removing blood stasis to improve limb circulation. The onset is often unconscious, often staying in the foot, the hand and other parts appear redness and swelling can be detected, there is itching or stinging when warm, can blisters; blisters after the epidermis, the wound is red, there is exudate; concurrent infection forms erosion or ulcer. basic knowledge The proportion of illness: 0.001% Susceptible people: no specific population Mode of infection: non-infectious Complications: cerebrovascular disease bacterial infection
Cause
Non-frozen cold injury cause
Exposure to local skin of the body at low temperatures above freezing point, vasoconstriction and slow blood flow, affecting cell metabolism. After the local skin reaches normal temperature, the blood vessels are dilated, congested and exuded, and the reaction is larger, and there is effusion (bubble) under the epidermis. Some capillaries have thrombosis even after small movements and veins, and then cause some tissue necrosis.
Prevention
Non-frozen cold injury prevention
Working in the field in winter, the personnel on duty should have cold-proof, waterproof clothing, people who have suffered from frostbite, especially children. In the cold season, pay attention to the warmth of hands, feet, ears, etc., and rub some anti-frost creams. .
Complication
Non-frozen cold injury complications Complications, cerebrovascular disease, bacterial infection
It can be blistered: the blisters turn red after the epidermis; there is exudate: after the infection, it forms erosion or ulcer.
Can induce occlusive vascular disease.
Symptom
Non-frozen cold injury symptoms Common symptoms Redness and swelling of the back of the hand, frostbite, frostbite, frostbite, cracked foot, frostbite, finger or arm thorn... Itching and congestion
The frostbite in the hands, ears, feet and other parts occurs unconsciously until the symptoms appear. The skin is pale and numb, then it is red, swollen, painful, watery and may be sensitive to cold after healing. Hemp, pale and other reactions. Local skin is red and swollen, itching or stinging when warm. The heavier ones can cause blisters, and the blisters will have exudate on the wound surface after the epidermis, and will form erosion or ulcer after infection. After getting better, the skin is swollen and desquamate, and there may be pigmentation. After the cure, the same cold environment, frostbite can be re-issued. The lesions of the warping foot, the impregnated foot, etc. are heavier than the frostbite, and the blister breaks the wound surface and can be infected concurrently, and the cure is slow.
Examine
Non-frozen cold injury inspection
The onset is often unconscious, often staying in the foot, the hand and other parts appear redness and swelling can be detected, there is itching or stinging when warm, can blisters; blisters after the epidermis, the wound is red, there is exudate; concurrent infection forms erosion or ulcer.
Diagnosis
Non-frozen cold injury diagnosis and identification
Non-frozen cold injuries often have individual susceptibility factors, so people who are not under the same conditions are all ill, frostbite is easy to relapse, may be related to the reduction of local skin resistance after illness, and some are squatting, immersed foot cure After the low temperature, the affected foot may have pain, numbness, paleness, etc., and may even induce occlusive vascular disease.
