Although the area of low-temperature burn is not large, the epidermis is not as serious as boiling water, but the wound is deep, often reaching the dermis through the epidermis, and even causing tissue necrosis, and some of it can reach the bone. Low-temperature burns, like barbecues, are baked at low temperature for a long time, and the inside is cooked, usually belonging to deep second or even third degree burns. Such a wound is long and troublesome to treat. Third-degree burns, in particular, usually require skin grafting.

As long as the skin is exposed to a heat source of 40℃-50℃ for a long time, it may cause low-temperature burns. Contact with the temperature of 70℃ 1 min may burn the skin. When the skin is exposed to the temperature of nearly 60℃ for more than 5 minutes, it may also cause burns. In other words, the higher the temperature, the longer the duration and the more serious the burn. Hot water bottles, baby warmers, electric blankets and heaters will all cause nerve endings in cryogenic burns, especially in the elderly. In addition, the cuticle of lower limbs is thick and dull, which is more likely to cause low-temperature burns.

When using heating supplies, the temperature should not be too high and the time should not be too long. For example, hot water bottles and electric blankets should be used in advance and the bed should be covered first. The hot water bottle should be placed at the foot 10 cm, not on the foot. Old people, children, patients after anesthesia, drunkards, diabetics or those with peripheral sensory nerve block should use this product with caution to keep warm. In case of scald, firstly, wash the scalded area with cold water immediately and go to the hospital for further treatment as soon as possible. Don't take the medicine yourself, so as not to aggravate the condition.