Dermatomyositis Symptoms In Dogs. Dermatomyositis (dms) dermatomyositis (dms)* is an autoimmune disease of the skin and muscle that occurs in both humans and dogs. The prognosis for dogs with dermatomyositis is highly variable and depends upon the severity of their disease.

After a lot of research, my veterinarian made a diagnosis of dms. For most puppies, signs of. Dermatomyositis (dms) is an immune mediated, inflammatory disease affecting the skin and muscles of collies and shetland sheepdogs.