Pubic lice can be caused by sexual or indirect contact. Pubic lice are a contagious disease that can be transmitted from person to person in a number of ways, including sexual contact and indirect contact. 1. Sexual contact: Sexual contact is the main way to get infected with pubic lice. During sexual life, pubic lice can be transferred and spread during sexual contact between patients and normal people. 2. Indirect contact: Pubic lice can also be found in the patient’s personal belongings, such as towels, bed sheets, bedding, etc., which can be infected if shared by normal people. After being infected with pubic lice, the patient will usually show symptoms such as itching, localized ecchymosis and rash, which can be treated with sulfur ointment, lindane cream and other medications as prescribed by the doctor. When suffering from pubic lice disease should immediately go to the hospital, under the guidance of the doctor for treatment. In addition, it is necessary to pay more attention to prevention in life, such as paying attention to personal hygiene, changing clothes, protecting the living environment hygiene.