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“Scabies Life cycle
Diagnosis, Treatment
And Control”
Said Adan
animal.discovery.com
Skin contact with infected person.
Infected persons who have no itching can pass the mite on to others
Scabies is usually not transmitted via clothing or bedding its very uncommon (the usual wash cycle can be used when these items are laundered)
In routine scabies, a single mite is seen. Eosinophilic spongiosis may be present (H&E,
400X). Court
Classical sites of scabies rash...
between fingers wrists auxiliary areas female breasts (particularly
the skin of the nipples) the umbilical area penis and scrotum buttocks inside of legs ankles
Definite diagnosis - a definite diagnosis is made by taking skin scrapings from burrows and identifying the mites, their eggs or faeces by microscopy
Presumptive diagnosis - it is often difficult to find burrows and obtain suitable specimens, therefore presumptive diagnosis relies on history and clinical appearance
Use a scabicide for the treatment of scabies
Permethrin (Elimite) -- In 5% cream.
Ivermectin (Mectizan, Stromectol) -- Binds selectively with glutamate-gated chloride ion channels in invertebrate nerve and muscle cells, causing cell death.
Promote good surveillance of new residents Observe for rashes on arrival at the home, then at
3 weeks and at 6 weeks Maintain a high level of suspicion if patients present with
undiagnosed skin rashes Families are treated all at the same time.
Burgess I, 1994 - Sarcoptes scabiei and scabies, Advances in parasitology,Vol 33, Academic Press Limited
Burgess I, Cohen J, 2000 - Treating lice and scabies, Pages 99-105, Prescriber, 19 November 2000
Walker GJA, Johnstone PW, 2000 - Interventions for treating scabies, The Cochrane Library, Issue 3
Roberts DT, 2000 Editor – Lice and Scabies – A Health Professionals Guide to Epidemiology and Treatment. Public Health Laboratory Service, London
Scabies references
