Pemphigus vulgaris is an autoimmune disease of the skin, which is very rare in all animals. The autoantigen responsible for causing disease dictates where the lesions will be seen, as this is where the inflammatory response to the autoantigen will occur. | Pemphigus vulgaris is an autoimmune disease of the skin, which is very rare in all animals. The autoantigen responsible for causing disease dictates where the lesions will be seen, as this is where the inflammatory response to the autoantigen will occur. |