Why does frostbite happen?

Answer 1

You become very cold. You arms will go purple with orange dots on. You will get goosebumps. You could get hypothermia. Eventually your fingers and toes will go black and if you don't get warm very soon they will drop off. If you go to hospital and arrive a bit too late they might have to amputate your fingers are toes. If you are still in te early stages of frostbite you will feel numb. You will have a headache. +++ Essentially frost-bite kills the affected cells, leading to a grave risk of septicaemia. What is happening is you, or a part of you, is freezing. Humans are 60- 80% water so they can freeze. The reason it turns black is becaes the body, when trying to save the vital organs, stops sending blood to the tips of fingers, lips, toes, and other non vital, near the edge body parts. Everything NigelG said is true to the best of my knowledge.

Answer 2

The liquid in your tissues freezes, causing the cells to die.

Answer 3

The skin does not always freeze completely when it is frost bitten, but it can actually freeze. Frostbite occurs when the blood to the area is restricted. This causes tissue damage.