Low temperature burn
The heat generated by our Thermopads should be spreaded throughout the whole body by the blood circulation. But this process can be troubled when the pad is pressed to strong to the body and the blood circulation gets slowed down.
In this case the heat will not be spreaded in an optimal way and is concentrated to a small area of skin, which will be heated up disproportionately highly. This can cause so called low temperature burns.
If those low temperature burns occure, cool the skin and seek medical advice.