Phosphorus is a chemical element that is found naturally in air, rocks, soil and organic materials. It is essential for life, and one of the main chemicals necessary for plant growth. As a result, the biggest use of phosphorus is in artificial fertilizers.
When gangrene affects your skin, signs and symptoms may include: 1  Skin discoloration â ranging from pale to blue, purple, black, bronze or red, depending on the type of gangrene you have. 2  A clear line between healthy and damaged skin. 3  Severe pain followed by a feeling of numbness.
In addition to the features seen in more common types of gangrene, there are certain signs and symptoms peculiar to gas gangrene, a less common form of wet gangrene. In gas gangrene the infected area of skin can quickly extend, with some changes visible in just a matter of minutes.