A lice-killing lotion containing 1% permethrin or a mousse containing pyrethrins and piperonyl butoxide can be used to treat pubic (crab) lice. These products are available over-the-counter without a prescription at a local drug store or pharmacy. These medications are safe and effective when used exactly according to the instructions in the package or on the label. Lindane shampoo is a prescription medication that can kill lice and lice eggs.
Trichomoniasis is another type of vaginal infection. It is caused by a single-celled parasite that is usually spread through sex. In addition to causing bleeding after sex, it can also cause vaginal discharge and itching.
Long says they tested the theory by having men and women have sex with people who were positively infected with genital herpes, Gonorrhea, crabs, and syphilis. Of the 50 men and 50 women who were exposed via unprotected sex during the study, all were told to continue until climax, and then immediately shower.