Tinea pedis (athlete's foot) is an infectious disease that forms when fungus covers the skin surface of the palms or soles. This disease is highly contagious and recurrent. If it persists for a long time, the fungus tends to hide deeper, making treatment more challenging. It is generally recommended to seek treatment at the dermatology department of a standard hospital. Commonly used antifungal ointments can be applied; typically twice a day, with a treatment course of at least one to two months or even longer to completely kill the deep-seated fungus and achieve eradication. After recovery, it is important to maintain proper dietary and lifestyle habits, avoid wearing shared slippers, and not visit public baths or go swimming. If someone else in the household has this disease, it is advisable to treat it together to prevent cross-infection. (Note: The answer is for reference only. Medication should only be taken under the guidance of a professional physician, and blind medication must be avoided.)