The female mite Sarcoptes scabiei is the offender behind scabies, an uncomfortable but treatable condition. Symptoms take from two to six weeks to show up after exposure. People who have had scabies before may develop the symptoms more quickly the next time, in as little as four days. Since scabies is contagious, immediate treatment is ideal. Scabies is typically transmitted through physical contact with a contaminated person or item and spreads rapidly in schools and sports teams. The spread of scabies can also occur through sexual contact.
Most people with scabies develop a rash that may have a pimple-like appearance or look like hives, knots under the skin, or tiny bite marks. The rash may also present as scaly patches. Scabies rashes usually occur in the finger webs, wrists, elbows, back, feet, buttocks, and outer genitalia. In children and those with low immunity, the rashes may appear on the face, neck, palms, soles of the feet, and scalp, and burrow-like formations may accompany them.
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