Definition of dermatomyositis
: polymyositis that is accompanied by involvement of the skin and that is marked especially by reddish erythematous eruptions usually on the face, neck, upper trunk and distal half of the limbs and by violet-colored erythema of the eyelids and region over the upper eyelids
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Merriam-Webster unabridged
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Time Traveler for dermatomyositis
The first known use of dermatomyositis was circa 1899
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