Causes
Scabies is caused by a tiny, eight-legged mite. The female mite burrows just under the skin and makes a tunnel where it lays eggs.
The eggs hatch, and the mite larvae travel to the surface of the skin, where they mature. These mites can then spread to other areas of the skin or to the skin of other people. Itching is caused by the body’s allergic reaction to the mites, their eggs and their waste.
Close skin-to-skin contact and, less often, sharing clothing or bedding with a person who has scabies can spread the mites.
Pets don’t spread scabies to humans. The scabies mites that affect animals don’t survive or reproduce in people.
However, coming in contact with an animal that has scabies may cause brief itching if the mite gets under the skin. But within a few days, the mite will die. So treatment isn’t needed.