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December 1977

Norwegian Scabies Due to Sarcoptes scabiei var Canis

Author Affiliations

Iman, Mexico

Arch Dermatol. 1977;113(12):1733. doi:10.1001/archderm.1977.01640120101038

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To the Editor.—  A 14-year-old girl had Turner's syndrome and an eight-year history of disseminated crusted lesions on the scalp and other areas of her body (Fig 1). Pruritus was inconstant and mild. The diagnosis of Norwegian scabies was made on the basis of a skin biopsy specimen. Multiple mites were found in a dystrophic nail.When family members slept with the patient, they developed pruritus, which disappeared spontaneously in a few days. Three dogs, which also lived in the family's house, were infested severely with scabies. We successfully infested a healthy dog with the patient's mites (Fig 2). Attempts to infest rabbits and hairless mice were unsuccessful.While the patient was under general anesthesia, curettage of the lesions was performed.We removed 1,800 mg of crusts. The average population of adult mites in each of four samples of 10 mg of crusts was 56. There were approximately 10,000 adult

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