Women can determine whether they have pubic lice through the means of infection, conscious symptoms, and external manifestations of pubic hair and underwear. 1. Infection: Pubic lice are mainly transmitted through unclean sexual intercourse, but can also be infected through the use of towels and underwear infected with pubic lice. 2. Symptoms: Women infected with pubic lice may feel a crawling sensation and intense itching in the vulva, which is usually aggravated at night, and scratches and small red granular papules may appear when scratching the skin of the vulva. 3. Changes in pubic hair and underwear: after women are infected with pubic lice, usually a large number of eggs are attached to the pubic hair, touching the pubic hair has a rough feeling, and you can feel the tiny eggs; you can see rust-colored red spots on the underwear, which is the bleeding of pubic lice after biting. Pubic lice dropped on the underwear can also be observed crawling body of pubic lice, dropped pubic hair can be seen on the eggs of pubic lice. Women who can’t tell if they have pubic lice themselves can go to the hospital for a clear diagnosis and standardized treatment under the guidance of a physician.