Focal myositis

What is Focal myositis?

A rare idiopathic inflammatory myopathy characterized by a localized swelling of skeletal muscle that is usually located in the lower extremities.

Other condition names

  • Focal nodular myositis
  • Inflammatory pseudotumor of skeletal muscle

Inheritance type

Not applicable


  • Worldwide: <1 in 1,000 000

Age of Onset

  • Adult
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