What is "sarcoptes scabei"

Itch \Itch\, n.

1. (Med.) An eruption of small, isolated, acuminated vesicles, produced by the entrance of a parasitic mite (the Sarcoptes scabei), and attended with itching. It is transmissible by contact.

2. Any itching eruption.

3. A sensation in the skin occasioned (or resembling that occasioned) by the itch eruption; -- called also scabies, psora, etc.

4. A constant irritating desire.

   An itch of being thought a divine king.
   --Dryden.

   Baker's itch. See under Baker.

   Barber's itch, sycosis.

   Bricklayer's itch, an eczema of the hands attended with much itching, occurring among bricklayers.

   Grocer's itch, an itching eruption, being a variety of eczema, produced by the sugar mite ( Tyrogluphus sacchari).

   Itch insect (Zo["o]l.), a small parasitic mite ( Sarcoptes scabei) which burrows and breeds beneath the human skin, thus causing the disease known as the itch. See Illust. in Append.

   Itch mite. (Zo["o]l.) Same as Itch insect, above. Also, other similar mites affecting the lower animals, as the horse and ox.

   Sugar baker's itch, a variety of eczema, due to the action of sugar upon the skin.

   Washerwoman's itch, eczema of the hands and arms, occurring among washerwomen.