★★★★★
This said, you must know the risks of shock. Dumping a cup of hot tea in your lap and burning your genitals can easily put you into shock. This happened to a friend of mine and they put ice water packs on her (rags soaked in ice water) for quite a long time. I was there to see it. They sent her home with ointment of some kind. Cold stops the tissue from cooking, but you can also freeze the tissue and damage it. So, you have to use common sense. If you leave ice directly on skin for too long, it will freeze it like anything else. Check it often. If you can't take the ice, use ice water or rags soaked in ice water.
Know the symptoms and risks of shock. If you are alone and you are at risk of going into shock, call 911. Do not try to treat yourself. Do your homework, and use common sense.
Ice
★★★★★