The main cause of athlete's foot is direct fungal infection, which is highly contagious and recurrent over time. The most common way of contracting the fungus is through direct contact with it via the hands and feet. For instance, if pets are kept at home and their hygiene is not well maintained, and they are often petted, the fungus can be transferred to the hands. During the process of washing feet, the fungus on the hands can cross-contaminate the feet, so this disease is mostly related to direct contact. It is recommended to seek professional treatment at a reputable hospital's dermatology department. Antifungal ointment can be applied topically, twice a day, and the treatment should be persisted for one to two months or longer. After recovery, avoid bathing or swimming in public baths, and do not share towels or bath scrubs with family members.