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.
The symptoms of Crohn's disease depend on where the disease occurs in the bowel and its severity. In general, symptoms can include: 1  Chronic diarrhea, often bloody and containing mucus or pus. 2  Weight loss. 3  Fever. 4  Abdominal pain and tenderness. 5  Feeling of a mass or fullness in the abdomen. 6  Rectal bleeding.