Scabies is contagious skin irritation and is caused by a very tiny insect called the itch mite. The presence of the mite leads to intense itching in the area of its burrows. The sheer discomfort of scabies can produce an almost irresistible urge to scratch, especially while you're in bed at night.
Scabies is contagious through close physical contact and can spread quickly throughout a family, child-care group, school class or nursing home. Because of the contagious nature of scabies, doctors often recommend treatment for entire families or groups to eradicate the mite.
Medications applied to your skin effectively kill the mites, although you may still experience some itching for up to several weeks.
Scabies is a common skin infection that causes small itchy bumps and blisters due to tiny mites that burrow into the top layer of human skin to lay their eggs.
The burrows sometimes appear as short, wavy, reddish, or darkened lines on the skin's surface, especially around the wrists and between the fingers. A child who has contracted scabies can also develop a bumpy red rash.
Scabies is contagious, and is usually transmitted by skin-to-skin contact or through sexual contact with someone else who is infected with it. The infection spreads more easily in crowded conditions and in situations where there is a lot of close contact - like child-care centers or nursing homes. So if someone in your child's class or child-care group has scabies, it's a good idea to have your child treated for the infection even before he or she develops symptoms.
What is scabies?
Scabies is an infestation of the skin with the microscopic mite Sarcoptes scabei. Infestation is common, found worldwide, and affects people of all races and social classes. Scabies spreads rapidly under crowded conditions where there is frequent skin-to-skin contact between people, such as in hospitals, institutions, child-care facilities, and nursing homes.
What are the signs and symptoms of scabies infestation?
How did I get scabies?
By direct, prolonged, skin-to-skin contact with a person already infested with scabies. Contact must be prolonged (a quick handshake or hug will usually not spread infestation). Infestation is easily spread to sexual partners and household members. Infestation may also occur by sharing clothing, towels, and bedding.
Who is at risk for severe infestation?
People with weakened immune systems and the elderly are at risk for a more severe form of scabies, called Norwegian or crusted scabies.
How long will mites live?
Once away from the human body, mites do not survive more than 48-72 hours. When living on a person, an adult female mite can live up to a month.
Did my pet spread scabies to me?
No. Pets become infested with a different kind of scabies mite. If your pet is infested with scabies, (also called mange) and they have close contact with you, the mite can get under your skin and cause itching and skin irritation. However, the mite dies in a couple of days and does not reproduce. The mites may cause you to itch for several days, but you do not need to be treated with special medication to kill the mites. Until your pet is successfully treated, mites can continue to burrow into your skin and cause you to have symptoms.
How soon after infestation will symptoms begin?
For a person who has never been infested with scabies, symptoms may take 4-6 weeks to begin. For a person who has had scabies, symptoms appear within several days. You do not become immune to an infestation.
How is scabies infestation diagnosed?
Diagnosis is most commonly made by looking at the burrows or rash. A skin scraping may be taken to look for mites, eggs, or mite fecal matter to confirm the diagnosis. If a skin scraping or biopsy is taken and returns negative, it is possible that you may still be infested. Typically, there are fewer than 10 mites on the entire body of an infested person; this makes it easy for an infestation to be missed.
Can scabies be treated?
Yes. Several lotions are available to treat scabies. Always follow the directions provided by your physician or the directions on the package insert. Apply lotion to a clean body from the neck down to the toes and left overnight (8 hours). After 8 hours, take a bath or shower to wash off the lotion. Put on clean clothes. All clothes, bedding, and towels used by the infested person 2 days before treatment should be washed in hot water; dry in a hot dryer. A second treatment of the body with the same lotion may be necessary 7-10 days later. Pregnant women and children are often treated with milder scabies medications.
Who should be treated for scabies?
Anyone who is diagnosed with scabies, as well as his or her sexual partners and persons who have close, prolonged contact to the infested person should also be treated. If your health care provider has instructed family members to be treated, everyone should receive treatment at the same time to prevent reinfestation.
How soon after treatment will I feel better?
Itching may continue for 2-3 weeks, and does not mean that you are still infested. Your health care provider my prescribe additional medication to relieve itching if it is severe. No new burrows or rashes should appear 24-48 hours after effective treatment.