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.
Causes of Itching After Bathing. 1  Water: Not drying the skin properly after bathing. Steam exposure without properly drying can have a similar effect. 2  Heat: Hot water can irritate the skin, dry it excessively and worsen existing inflammation. 3  Toiletries: Soaps, shampoos and toothpaste should be removed thoroughly.