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Calcinosis as a complication of juvenile dermatomyositis (JDM)

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Calcinosis is a common complication of JDM. It may varies on extension and severity. May cause mechanical and aesthetic complications and predispose to infections.


To evaluate the frequency and features of calcinosis in a cohort of patients with JDM and identify if there are risk factors.


Retrospective descriptive study in 3 pediatric rheumatology centers in Bogota during a period of 20 years. Two groups were identified according to the presence or absence of clinical and radiological signs of calcinosis after a minimum of 2 years of follow up.


17/42 developed calcinosis associated with earlier onset of the disease, male predominance and chronic. Calcium deposits were classified as: superficial nodular, deep nodular, mass, linear or mixed deposits and calcinosis universalis. 80% had two or more types of deposits. The anatomical areas more frequently affected were the thighs and forearms. Complications included: drainage, chronic ulcers, mass effect, mechanical blockage of the joints and infections. Severe calcinosis was also associated with significant muscle atrophy loss and lipodystrophy.

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Calcinosis is common and severe of JDM. It leads to various complications and treatment response is poor. Early diagnosis and proper treatment may reduce the frequency of this complication.

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Correspondence to Malagón Clara.

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About this article


  • Mass Effect
  • Muscle Atrophy
  • Dermatomyositis
  • Calcium Deposit
  • Lipodystrophy