Dermatology

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Dogs and cats are often presented with a complaint of scratching and chewing resulting self-inflicted trauma. Pruritus is a very unspecific clinical sign which can be caused by many different problems such as various ectoparasites, microbial infections and a wide range of hypersensitivities.

Concurrent claw problems are not unusual in many skin diseases, but rare as the only dermatological problem. The most common disease affecting single claws are: trauma, bacterial or fungal infections; the most common condition affecting multiple claws would be onychodystrophy.

This was a commonly diagnosed disease in the late 70s and early 80s. It is rarely diagnosed today. With current day tests for infectious diseases like leishmaniasis and our understanding of the complexities of cutaneous drug reactions, most cases of "lupus" are actually not "lupus" and might be a curable disease.

Currently there are 3 morphologically separate species of follicularly oriented demodex mites in the dog: Demodex canis, Demodex injae, and Demodex ?. The unnamed species has a very short tail but is not Demodex gatoi of the cat.