Pictures of crabs std. Head lice are not pubic lice. These products don't need a prescription. The other two are head and body lice. Dealing with head lice is comparatively difficult. Malathion lotion 0. Pubic lice most often are smaller than body and head lice. Another century or two ago, pubis was shaved mainly by female workers of the ancient profession precisely for protection against lice. If you have one kind of lice it doesn't mean you'll get another kind.