Pubic lice disease is a parasitic disease caused by the bite of pubic lice on the skin near the pubic and anal areas. The eggs of pubic lice adhere to the hair and pierce the skin through the mouthparts to suck blood, which can produce epidermal damage, and the stimulation of toxic secretions can also cause disease. Male patients with pubic lice are caused by two conditions, including poor personal hygiene and unclean sexual life: 1, poor personal hygiene: patients fail to clean up in time after strenuous exercise or sweating, so that the perineum, near the genitals in a long-term damp, hot and humid state, their own intimate clothing, bedding failed to replace, clean, dry in a timely manner, as well as sharing bed sheets, bedding and other personal items with others may lead to pubic lice The patient has a history of unclean sexual life, and the object of sexual life is infected with pubic lice, and the infection will occur during sexual intercourse. After the patient is diagnosed with pubic lice infection, it is recommended to remove pubic hair. Use sulfur soap for local cleaning, dry and apply sulfur ointment appropriately for treatment. For patients with severe itching, redness and swelling, even oozing blood and accompanied by stinging pain should promptly go to the hospital and choose medication under the guidance of a doctor, commonly used drugs include tincture of bacitracin, benzyl benzoate, permethrin, pyrethrin, phenothrin, malathion, etc.