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Scabies

What Are Scabies?

  • Scabies is a skin infestation caused by the burrowing eight-legged mite Sarcoptes scabiei (see pictures above). A. tiny mite that has infested humans for 2,500 years, this tiny creature is just barely visible to the human eye.
  • It is common among children.
  • Scabies is characterized by severe itching, particularly at night, and small blister-like eruptions or short, wavy linear burrows in the skin, expecially in the webs between the fingers, on wrists, elbows, armpits, waist, buttocks and genitals.
  • You may experience severe and continuous itching (especially at night, which can keep sufferers awake all night). A good clue that scabies may be the cause is if several members of the same family or contacts have the same symptoms.
  • The female insect, (a tiny, eight-legged creature with a round body) seeking warmth, burrows into the skin where she lays 1 - 3 eggs daily and produces secretions which often cause an allergic reaction. A small, hard to see, reddish zigzag blister usually marks the trail of the insect as she lays her eggs.
  • When the eggs hatch, the larvae travel to the skin surface where they develop into adult mites. It might be a month before a newly infested person will notice the itching, especially in people with good hygiene and who bathe regularly.
  • Scabies is transmitted by close personal contact with an infected individual, is highly contagious, and spreads rapidly.
  • 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.
  • Clothing can be another way to transferr scabies.
  • If scratched off the skin, it can live in bedding up to 24 hours.

Scabies Facts

  • Scabies is contracted 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.
  • People with weakened immune systems and the elderly are at risk for a more severe form of scabies, called Norwegian or crusted scabies.
  • 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.
  • You cannot get scabies from your pet! Pets get a different kind of scabies called mange. If your pet is infested with scabies 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.
  • 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.
  • 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.
  • 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 re-infestation.
  • Itching may continue for 2-3 weeks and does not mean that you are still infested. Your health care provider may prescribe additional medication to relieve itching if it is severe. No new burrows or rashes should appear 24-48 hours after effective treatment.
  • Note: We recommend avoiding the use of poison-based treatments. Traditional medicine is to treat with poison based lotions for 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.

There is a similar type of scabies called Norwegian Scabies. For more information, see the bottom of this page.

The above information is provided as educational. Please see your doctor if you feel you have a skin problem.

How to remove scabies from your body with Kleen Green™

Suggested Dilution: 1ooml of Kleen Green™ to 7ooml of water

  • Apply directly on affected area with finger, cotton ball or swab. Massage diluted Kleen Green™ onto dry skin. Allow Kleen Green™ to dry when applied to the affected area.
  • Repeat this topical application daily to insure complete coverage, preferably morning, noon, night and before bedtime. Continue using until symptoms no longer persist, usually 1 to 3 weeks depending on degree of infestation.
  • Kleen Green™dilution can be applied as often as needed.
  • For best results: Take a soaking bath, preferably in the late afternoon or early evening, using 100ml to 200ml of Kleen Green™ in a tub of warm water. Soak approximately 20 minutes. Do not use soap or other products during this soaking process. Air dry. After body is completely dry, apply diluted Kleen Green™ solution to problem areas. Do not rinse. This soaking bath may be done daily.
  • For external use only. If contact is made with eyes, rinse thoroughly with clean cool water. Can cause eye irritation. If skin irritation or infection develops consult your physician or dermatologist. Keep this and all cleaners out of the reach of children.
  • Note: Scratching an infected area and then another non-infected area on the body can easily transfer scabies.

Scabies prevention

  • Bathe, soak or wash using diluted Kleen Green™ Enzymes, Borax and/or sulfur.
  • Routinely using a sauna may also be helpful.
  • Regularly change and wash all clothing, bedding, towels and underwear.
  • When laundering towels, clothing and bedding use hot water with Kleen Green™ or Borax.
  • Children should not share clothing or other personal articles such as hair brushes, combs or towels with one another.
  • When an outbreak of scabies is reported be alert for symptoms in members of your family.
  • If your child has scabies, please notify the school authorities so the school will be alerted to check for any outbreak.
  • Note: The above measures are suggested to help prevent reinfestation. However, even the medicated (poison) lotion treatment for scabies does not provide long-term protection and reinfestation is always possible. Try to avoid the use of poison on your person or child at all costs.

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?

We recommend avoiding the use of poison based treatments.Traditional medicine is to treat with poison based lotions for 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 may prescribe additional medication to relieve itching if it is severe. No new burrows or rashes should appear 24-48 hours after effective treatment.

Norwegian Scabies

What's the difference between Norwegian scabies and regular scabies? If I simply walked into the room of a patient with Norwegian scabies, but did not have direct contact with the patient or anything in their room, what's my risk of becoming infected?

Norwegian scabies was initially described, shockingly enough, in Norway. The first case was reported by Danielssen and Boeck in 1848, who believed the disease to be a variant of leprosy. Hebra reported a similar case in 1851, correctly attributed it to the scabies mite, and named the disease "scabies norvegic Boeckii."

The truth is, the main difference between Norwegian scabies and regular scabies is simply the number of mites present on an infected person. In regular scabies, the number of mites on a host at any one time is, on average, 10 to 15 (with a range of 3-50). Persons with Norwegian scabies, on the other hand, will have thousands to millions of mites. Consequently, their skin manifestations are much more severe, with thick, hyperkeratotic crusts that can occur on almost any area of the body.

The type of mite in both presentations is exactly the same. The difference lies with the host, with those developing Norwegian scabies usually having a compromised immune system. Indeed, a normal host who acquires scabies from a patient with Norwegian scabies will develop only a usual case of scabies.

Clinically, Norwegian scabies differs from regular scabies in two ways:
1. It presents with more severe skin manifestations, and
2. It is usually not very pruritic (itchy). The decreased pruritis (itching) observed in Norwegian scabies is a bit counterintuitive, but probably reflects the idea that the pruritis (itching) in scabies is due to the host's immune response (and this response is muted in patient's with Norwegian scabies, which is why the infection progressed to that point in the first place).

Since Sarcoptes scabei are not able to jump or fly, the only way to acquire the infection is by direct contact with an infected patient or by contact with infected linens, clothing, or furniture. If someone was in the room of a patient with Norwegian scabies and really did not touch the patient or anything else in the room, it is unlikely that person will develop scabies. However, if they touched anything at all, there is a substantial risk of infection. Because patients with Norwegian scabies have such a tremendous parasite burden, they are very infectious. Indeed, one report by Hsueh et al found that 29 of 50 direct and indirect contacts of a patient with Norwegian scabies acquired scabies. Consequently, in order to minimize the chances of a scabies outbreak, the threshhold for prophylactic scabicidal treatment for hospital personnel exposed to a patient with Norwegian scabies should be low.

Interestingly, the incubation period from time of infection to time of symptoms in a normal host is much shorter when one gets infected from a patient with Norwegian scabies than from a patient with regular scabies (10-14 days vs 4-6 weeks). While I was not able to find any explanation for this finding in the literature, I presume it is somehow related to the larger initial parasite burden people become infected with after contact with a patient with Norwegian scabies.

References

  • Haag ML et al. Attack of the scabies: What to do when an outbreak occurs. Geriatrics 1993;48(10):45-53.
  • Hsueh P et al. Nosocomial outbreak of scabies. J. Formosan Med Assoc 1992;91:228-32.
  • Kolar KA and Rapini RP. Crusted (Norwegian) Scabies. Amer Fam Phys 1991;44(4):1317-21.
  • Sterling GB et al. Scabies. Amer Fam Phys 1992;46(4):1237-41.
  • Sweitzer SE and Winer LH. Norwegian scabies. Arch Dermatol Syphilol 1941;43:678-81

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