Watch out for pubic lice if there are blood spots on your underwear

　　Xiaoping is 32 years old and married. She recently felt itching in her vulva. Although she changes her underwear every day, she always sees blood spots of varying shades on her underwear, which look like rust. After a doctor's diagnosis, she was probably suffering from pubic lice.

　　Pubic pediculosis second generation sexually transmitted diseases

　　What is pubic lice? Pubic lice can be transmitted through sexual contact. When a patient has sexual contact, the pubic lice attached to the pubic hair crawl and transfer to the healthy In the vagina of a sexual partner, lice eggs can also be shed in the partner's pubic hair during sexual wear and tear, and then hatch into adult lice that feed on human blood.

　　People with pubic lice have rust-colored spots on their underwear

　　Pubic lice are an external parasite. When it sucks human blood, it first pierces the tubular mouthparts skin , enters the capillaries in the dermis, and then secretes saliva to prevent blood coagulation. It sucks blood and leaves behind dark red excrement.

　　The saliva of pubic lice can irritate patients and cause persistent itching. Violent scratching can cause local bleeding, erosion and secondary bacterial infection. Blue-gray spots will also appear on the skin of the pubic hair, which is caused by the denaturation of hemoglobin after pubic lice suck blood.

　　Due to the above reasons, patients often have rust-colored spots on their underwear.

　　How to prevent pubic lice?

　　The key to preventing pubic lice is to stay clean and avoid having an unclean sex life. Sexual partners should be treated at the same time. First, shave all the pubic hair and burn it, and then apply 50% Baibu liquid (soak 30 grams of the traditional Chinese medicine Baibu liquid in 100 ml of 75% alcohol for 24 hours). You can also use 10% sulfur ointment, Unifur or mesylamine for external application on the affected area.