classify a pressure sore

How would you classify a pressure sore?
A pressure sore is classified into 4 stages,
1. stage I pressure sore would appear as a reddened area that does not blanch (turn white. When pressed
2. stage II pressure sore involves a partial breakdown of the upper layer of skin, but does not extend all the way through the
3. stage III and stage IV ulcers extend all the way through the skin
4. stage IV ulcers extend all the way down to muscles, tendons or bones GET A GENUINE 100 % CUSTOM TERM PAPER DO MY PAPER AND GUARANTEE 5 STARS QUALITY