Synonyms
Amyopathic dermatomyositis; Dermatomyositis sine myositis; Idiopathic inflammatory myopathy
Definition
Dermatomyositis is a progressive connective tissue disorder characterized by inflammatory and degenerative changes of the muscles and skin.
Clinical Presentation
The cutaneous manifestations of dermatomyositis are arguably the most distinct and dramatic of any other autoimmune connective tissue disease. Once recognized, the clinician may establish the diagnosis even when there is histologic as well as serologic ambiguity. The unique quality of the rash is as important as its typical location pattern. Lesions typically present as patches or plaques, and all are characterized by either pink or violaceous erythema that can be with or without scale. The heliotrope eruption of the eyelids, as is typical for most of the cutaneous findings in dermatomyositis, is very distinctive and may be associated with persistent periocular edema. However, it may initially be thought to be...
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Fiorentino, D., Franks, A.G. (2014). Dermatomyositis, Skin. In: Mackay, I.R., Rose, N.R., Diamond, B., Davidson, A. (eds) Encyclopedia of Medical Immunology. Springer, New York, NY. https://doi.org/10.1007/978-0-387-84828-0_278
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