High-frequency ultrasound biomicroscopy findings of the skin of dogs with atopic dermatitis.

Background: The high-frequency ultrasonographic appearance of skin of dogs with atopic dermatitis (cAD) has not been described.

Objectives: To compare high-frequency ultrasonographic findings among lesional, macroscopically nonlesional skin of dogs with cAD, and the macroscopically nonlesional skin of healthy dogs. Additionally, to determine whether there is any correlation between the ultrasonographic findings in lesional skin and local Canine Atopic Dermatitis Extent and Severity Index, 4th iteration (CADESI-04) or its domains (erythema, lichenification, excoriations/alopecia).