Tinea pedis is a skin disease caused by fungal infections, mostly caused by dermatophytes that invade the skin’s keratin, and usually occurs unilaterally and can be transmitted from one side to the other over time. If you want to make a definite diagnosis, you can go to a hospital and have a fungal test done, scrape the scales and observe them under a microscope, and if there are components of mycelium and spores, the diagnosis can be confirmed. For the treatment of tinea pedis, you can apply topical antifungal infection drugs, such as terbinafine cream, luliconazole cream, and naftifine ketoconazole cream, which are commonly used, and generally need to consolidate the treatment for at least one week after the rash subsides to be cured.