Why does frostbite itch when exposed to heat? The hidden "harm" of warm environment

Why does frostbite itch when it is hot? Many babies have had frostbite, so many babies should have discovered that after having frostbite, as long as they are in a warm environment, the frostbite will start to itch. Why is this? The following will introduce to you the reasons why frostbite itches when it is hot. Let's take a look~

Why does frostbite itch when exposed to heat?

Chilblains become itchy when exposed to heat because cold stimulation causes blood vessels to constrict and blood circulation to become obstructed. If the frostbite area is exposed to heat stimulation at this time, it will aggravate the vascular circulation disorder, resulting in the blood not being able to return in time, thereby causing local circulatory congestion. The congestion will cause skin tissue edema, and skin tissue edema will stimulate the skin's peripheral nerves. The skin's peripheral nerves are relatively sensitive, and will produce an itchy feeling after being stimulated, causing the frostbite to become itchy when exposed to heat.

How to relieve frostbite itching

To relieve the itching of frostbite, it is necessary to fundamentally solve the symptoms of frostbite, thereby alleviating the itching phenomenon of frostbite when exposed to heat.

Keep away from heat

The most important thing to relieve the itching caused by frostbite when exposed to heat is to keep the frostbite area away from heat sources as much as possible. For example, do not immediately warm yourself by the fire when you come home from outside, as this will irritate the frostbite area and aggravate the itching. Babies with frostbite should not be washed with overheated water, otherwise it will irritate the frostbitten skin. It is recommended that the water temperature is around 40°C.