Dermatomyositis

（重定向自Gottron papules）

X-Ray of the knee in a person with dermatomyositis.

Micrograph of dermatomyositis. Muscle biopsy. H&E stain.

Dermatomyositis (DM) is a rare neuromuscular disease related to polymyositis (PM) that is characterized by inflammation of the muscles and the skin. While DM most frequently affects the skin and muscles, it is a systemic disorder that may also affect the joints, the esophagus, the lungs, and the heart. In the United States, the incidence of DM is estimated at 5.5 cases per million people.

单词	Gottron papules
释义	Gottron papules 英语百科 Dermatomyositis （重定向自Gottron papules） Dermatomyositis (DM) is a rare neuromuscular disease related to polymyositis (PM) that is characterized by inflammation of the muscles and the skin. While DM most frequently affects the skin and muscles, it is a systemic disorder that may also affect the joints, the esophagus, the lungs, and the heart. In the United States, the incidence of DM is estimated at 5.5 cases per million people.
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