What's causing this dog's pruritus and greasy truncal coat?
This older fox terrier has a history of previously seasonal glucocorticoid-responsive pruritus. In the past year, her pruritus has become nonresponsive to glucocorticoids, and she has developed a greasy truncal coat.
A skin scraping is performed, and the results are pictured (100X magnification).
What is your diagnosis?
a) Infection with Demodex injai
b) Infection with Demodex canis
c) Infection with Demodex folliculorum