Exams and Tests

The diagnosis of athlete's foot can usually be made simply by looking at the rash. The diagnosis can also be confirmed by looking at a scraping of the infected area of the foot under a microscope. The doctor will see microscopic yeast cells on the slide.

If the doctor suspects a secondary infection by bacteria, the doctor may look at your foot with a special blue light called a Wood's lamp. If your foot is infected with specific bacteria called Pseudomonas aeruginosa, the rash will fluoresce a greenish color. This test will aid your doctor in choosing the proper antibiotic.

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Athlete's Foot - Symptoms

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