*See also [[Muscles Developmental - Pathology#Canine dermatomyositis|Canine dermatomyositis]]
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*Affects puppies of collies and shetland sheepdogs from 8 weeks of age
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*Lesions - vesiculating dermatitis
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**Face, lips, external ears, later distal extremities
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*Microscopically: interface dermatitis and basal cell degeneration of epidermis and follicular wall, atrophy of follicles, epidermal vesicles and pustules, dermal scarring
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[[Category:Integumentary System - Autoimmune Reactions]]