A 38-Year-Old Dog Owner With a Blistering, Itchy Rash

Melba Estrella, MD; Alan Snyder; John Plante; Dirk M. Elston, MD

Disclosures

October 29, 2020

Physical Examination and Workup

The skin examination reveals two poorly to well-demarcated linear plaques composed of multiple coalescing erythematous papules with punctate erosions, some of which exhibit sanguineous crusting. Slightly perceptible edema and overlying thin scaling are also present. Both lesions conform to a band-like rash confined to the posterior aspect of the waistline and upper buttocks, with sparing of the intergluteal cleft (Figures 1 and 2).

Figure 1.

Figure 2.

Associated moderate pruritus is also present. The regional lymph nodes are nonpalpable, and no additional rashes are noted. The rest of the physical examination findings are unremarkable.

The patient undergoes patch testing with the Thin-layer Rapid Use Epicutaneous Test (TRUE Test) baseline series kit and swabs for viral and bacterial culture. The results of all tests are negative.

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