Summer is hot, summer use PVC hot water bottle health, beware of low temperature burns.

"Cold burn" refers to local skin damage caused by prolonged contact with a liquid or solid at a lower temperature (as opposed to boiling water). This is a relatively popular statement, in fact, for the specific temperature of low-temperature burns, the industry has no clear statement. In general, the temperature threshold for skin burns is 45 ° C. Studies have shown that hot water at 44 ° C for 6 hours will cause irreversible damage to skin basal cells, while hot water at 45 ° C only takes 1 hour to cause skin burns. If the water temperature reaches or exceeds 70 ° C, it only takes 1 second to cause a burn through the skin. Therefore, the heat source of low-temperature burns should be about 45-50 ° C, because the water temperature is too high for humans to tolerate for a long time and cannot reach the conditions of burns. Unlike our usual hot water burns or flame burns, low-temperature burns are not found until a long time after injury because the temperature of the injury is not high and has a strong concealment.

Symptoms of low temperature burns: low temperature burns are often only a blister on the surface of the skin at the beginning, generally about 2-4 cm in diameter, accompanied by not obvious pain, the base of the blister is purplish red or white after accidentally bursting. Because the wound is not large and the pain is not obvious, patients often use external scalding ointment or Chinese medicine. The wound will repeatedly scab and then repeatedly collapse, prolonged and not healed, and eventually it will take 2-3 months or even about half a year to heal, and the local scar will be left after healing. In patients with chronic diseases such as diabetes and lower limb varicose veins, the wound healing time is longer and surgical intervention is often required.

How to deal with low temperature scald?

Once a low-temperature scalded wound is found, the patient should not treat it by himself. You should go to a hospital with a burn specialty, and the doctor will decide whether to change the dressing or recommend surgery according to the condition of the wound.

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