Your doctor will ask about your symptoms and about factors that make you more likely to develop athlete's foot, such as your use of public sports facilities, clubs or showers. Your doctor will ask about the type of shoes and socks you wear, what kind of work you do and what you wear on your feet to work.
Your doctor usually can diagnose athlete's foot simply by looking at your feet. To confirm the diagnosis, your doctor can gently scrape some flakes of skin from a scaly portion of your foot onto a slide. The dermatophytes that cause the infection often show up under a microscope.