Drug eruption associated with sulfonamide treatment of vertebral osteomyelitis in a dog.

Drug eruption was diagnosed in a 4-year-old German Shepherd Dog being treated with sulfonamides for vertebral osteomyelitis due to infection with Nocardia spp. The eruption was characterized by generalized, pruritic, eczematous dermatitis. Diagnosis was based on a history of repeated exposure to sulfonamides, skin biopsy findingd, and clinical recovery on cessation of sulfonamide therapy.