Question of the Day

This is a classic example of discoid lupus. There is a breed disposition including German Shepherds, Siberian Huskies, Brittanys, Collies, and Australian herding breeds.

Exposure to ultraviolet light is another risk factor. 

Dermatomyositis is a hereditary skin disease of Collies and Shetland Sheepdogs. Lesions are usually over bony prominences, tip of tail, and pinnae, rather than the nasal planum.

Image courtesy, Caroldermoid.