Fig. 9

clinical characteristics of canine facial discoid lupus erythematosus. a, b: erythematous, depigmented, ulcerated, crusted and scarred nasal lesions of FDLE in a rough collie; a discoid lesion is visible in the proximal dorsal muzzle; (c, d): during the chronic phase of FDLE, depigmentation and scarring without inflammation are present; (e): erosions leading to scars in a Labrador with active FDLE; (f) depigmentation, scarring and crusting in a dog with FDLE. The presence of prominent inflammation often heralds a secondary bacterial colonization, like in the so-called MCP (courtesy of Petra Bizikova, NC State University, Raleigh)