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What is In dermatomyositis which is not seen and explain in detail?
*DM is a distinct entity identified by a characteristic rash accompanying or more often preceding muscle weakness. this includes heliotrope rash ,erythema of knuckles with a raised violaceous scaly eruption(Gottron's sign). *Dilated capillary loops at the base of fingernails are also characterised *Palma areas of fingers may become rough and cracked with irregular diy horizontal lines resembling mechanics hands. Ref Harrison20th edition pg 2367