The bite of pubic lice irritates skin, in medicine it is known as pediculosis pubis (It is also known as “ crabs std”). Scabies is caused by a mite infestation, while eczema is a skin irritation. Body lice infestation should be suspected in patients with pruritus who live in crowded conditions or have poor hygiene. Crabs STD (Pubic lice) pictures and images. Body lice are tiny parasitic bugs that can infest an individual, invading the body and feeding off of its blood. Also known as "body lice" Scabies is easily transmittable from person to person simply through the touching or rubbing of skin. See scabies skin rashes, symptoms (night itching), treatments, and home care in this WebMD slideshow. Pubic lice (Phthirus pubis) are small parasitic insects that are found primarily in the pubic area or genital area of humans. Scabies is sometimes confused with bedbug bites, but in contrast to scabies, bedbugs are visible to the naked eye and can live for long periods without feeding. Approximately 2.3–3.6 millimetres (0.091–0.142 in) in length, body lice live in clothing and furniture--typically the bedding of an affected individual--and only move to a human host when they have matured and it comes time to feed. The scabies mite is not related to body lice, although the symptoms may be similar. Scabies and eczema may have a similar appearance, but their causes are very different. Scabies outbreaks are often highest in places where there are many people grouped together closely such as schools, camps, jails and prisons because of the constant and unavoidable contact between people. Lice are technically tiny parasitic insects that live on humans and feed off of their blood. There occurs a set of symptoms caused by infection with pubic lice. Pictures show the itch mite, how it spreads, who gets scabies, and how to get rid of it. Scabies mites can live for three to four days after falling off your body, so you’ll want to take certain precautions to prevent another infestation.