Sarcoptes scabiei

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Sarcoptes scabiei (; sar-KOP-teez SKAY-bee-eye) or the itch mite is a parasitic mite found in all parts of the world that burrows into skin and causes scabies. Humans become infested by Sarcoptes scabiei var. hominis, which is a particular public health problem in crowded settings such as care homes, schools, refugee camps, prisons, and hospitals. Other mammals can be infested with different varieties of the mite, including wild and domesticated dogs and cats (in which it is one cause of mange), ungulates, wild boars, bovids, wombats, koalas, and great apes. The Italian biologists Giovanni Cosimo Bonomo and Diacinto Cestoni showed in the 17th century that scabies is caused by Sarcoptes scabiei; this discovery of the itch mite in 1687 marked scabies as the first disease of humans with a known microscopic causative agent. The disease produces intense, itchy skin rashes when the impregnated female tunnels into the stratum corneum of the skin and deposits eggs in the burrow. The larvae, which...

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