Filiform warts are caused by human papillomavirus (HPV) infection. This disease is characterized by strong contagiosity and recursivity, with many cases likely experiencing recurrence after the initial treatment. The recurrence period varies; depending on individual immune strength, recurrences may occur about every half a month to one month. Once recurrence happens, it is necessary to treat again and remove the newly appeared warts. Some people may experience repeated recurrences and require multiple treatments to be completely cured. During the treatment period, interferon can be applied topically to prevent excessive viral proliferation. During the treatment period, it is also important to follow a proper diet and lifestyle habits. Bath sponges and towels should be used separately from other family members to prevent cross-contamination. Used items should be sun-dried and disinfected, and it is beneficial to eat foods that clear heat and reduce internal heat.