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.
Advertisement - Continue Reading Below. Certain personal products, such as feminine spray or douches, could also cause the burning sensation. So, if you use any of these products, stop for a while and see if the discomfort subsides. It's also possible, though not very likely, that your man's ejaculate is irritating your supersensitive vaginal lining.