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.
Obviously, if youâre menstruating, youâll see blood after intercourse. But sometimes postcoital bleeding can be a sign of cancer, so it's important to see your doctor if you are experiencing bleeding after sex. Here's a rundown of common causes of bleeding after sex. In all cases, donât try to diagnose yourself; get an evaluation from a medical professional to be sure.