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.
Some of the comorbid or associated medical symptoms for Secondary infection may include these symptoms: 1  Infection. 2  Inflammatory symptoms. 3  Skin symptoms. 4  Sensory symptoms. 5  Skin problems. 6  Nerve symptoms. 7  Itching skin. 8  Pain. 9  Sores. 10  more associated symptoms...Â».