Scabies is a skin rash caused by a tiny parasite called a human itch mite (Sarcoptes scabiei). The mite buries itself under your skin and lays eggs, causing intense itching and a pimple-like rash. Scabies is contagious. You can catch the infection if you have direct skin-to-skin contact with someone who has scabies -- for example, during sex. Scabies also easily spreads among those who live in close quarters, such as people who are in nursing homes, extended-care centers, and prisons. Follow the links below to find WebMD's comprehensive coverage about how scabies is contracted, what it looks like, how to treat it, and much more.