Description of Skin Lesions: This 49-year-old female had a 9-month history of smooth, slightly erythematous papules arranged in annular plaques on the dorsal aspects of both hands (see Figure 1).

A solitary pink scaling annular patch is the distinguishing ... over the course of 2 to 5 days. New papules develop over the next few weeks, but lesions gradually resolve within 6 to 8 weeks.

The signalment (young pig, white breed) and location (medial thighs, abdomen) and classical appearance (coalescing annular to serpiginous raised, crusty, non-pruritic) of the lesions, combined ...