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Related Experiment Videos

Eosinophilc polymyositis.

R J Stark

    Archives of Neurology
    |November 1, 1979
    PubMed
    Summary
    This summary is machine-generated.

    This case report details eosinophilic polymyositis, a rare inflammatory muscle disease. Despite normal blood eosinophil counts, prompt corticosteroid treatment proved effective for this condition with significant cardiac involvement.

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    Area of Science:

    • Rheumatology
    • Neurology
    • Cardiology

    Background:

    • Eosinophilic polymyositis is an uncommon inflammatory myopathy characterized by eosinophil infiltration of muscle tissue.
    • It often presents with muscle pain, weakness, elevated muscle enzymes, and characteristic electromyographic findings.

    Observation:

    • A patient presented with tender muscle swelling, proximal weakness, elevated creatinine kinase, and electromyographic findings consistent with polymyositis.
    • The patient also exhibited severe myocarditis, pericarditis, and heart failure.
    • Muscle biopsy revealed active myositis with eosinophilic infiltrate, notably with a normal peripheral blood eosinophil count.

    Findings:

    • The patient demonstrated an excellent clinical response to corticosteroid therapy.
    • A relapse occurred upon dose reduction but rapidly improved with increased prednisolone dosage.

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  • This case highlights that eosinophilic polymyositis can occur without elevated blood eosinophils.

    • Implications:

    • Eosinophilic polymyositis may represent a systemic inflammatory process with significant cardiac manifestations.
    • Early recognition and treatment with corticosteroids are crucial for managing this condition.
    • Further research is warranted to understand the pathogenesis and spectrum of eosinophilic polymyositis, especially its cardiac implications.