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.
Leg Itch After a Shower. Reasons for leg itch after a shower (usually hot shower) : 1  Frequent use of very hot water and certain soaps like antibacterial and strongly scented soaps, removes the protective oily layer lining the skin thereby making the skin dry and itchy. 2  Cholinergic urticaria (discussed above).