This microscopic film shows a fluorescent stain of Candida. This child has a large rash caused by Candidiasis, affecting the skin around the mouth. Occasionally, skin other than the diaper area may be involved. This photograph shows multiple small candidal infections on the arm. A paronychia is an infection around the nail.
Many organisms can cause a paronychia.
This particular case is caused by the yeast-like organism Candida. Candida grows best in areas of skin that are very moist. Folds in the skin, such as the crease of the buttocks, may allow this organism to grow.