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.
RELATED: 12 Ways to Show Your Vagina More Love Every Day. We shouldnât have to tell you this again, but unprotected sex can lead to an STD (which is why you always, always need to use protection). And a bunch of them can make your lady parts itch, including chlamydia, herpes, trichomoniasis, and gonorrhea.