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Sarcoptes scabiei var. canis refractory to ivermectin treatment in two dogs
Author(s) -
Terada Yuri,
Murayama Nobuo,
Ikemura Hiroshi,
Morita Tatsushi,
Nagata Masahiko
Publication year - 2010
Publication title -
veterinary dermatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.744
H-Index - 60
eISSN - 1365-3164
pISSN - 0959-4493
DOI - 10.1111/j.1365-3164.2010.00895.x
Subject(s) - ivermectin , sarcoptes scabiei , scabies , canis , refractory (planetary science) , medicine , veterinary medicine , dermatology , biology , ecology , astrobiology
A 10‐year‐old castrated male Shih Tzu presented with severe generalized pruritus. Skin scrapings revealed the presence of Sarcoptes scabiei var. canis . A Yorkshire terrier in the same household simultaneously developed pruritus due to scabies. Both dogs were treated with 300 μg/kg ivermectin, at first orally and then subcutaneously at 14 day intervals. However, live mites were still found on day 35, and the skin condition deteriorated in both dogs. These findings suggested that the S. scabiei in these dogs was clinically refractory to ivermectin. The pruritus in both dogs rapidly and completely disappeared following topical fipronil administration. This appears to be the first report of canine scabies refractory to ivermectin treatment.