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[Overlapping syndrome].

K Tanimoto1

  • 1Health Service Center, Saitama University.

Nihon Rinsho. Japanese Journal of Clinical Medicine
|March 1, 1992
PubMed
Summary
This summary is machine-generated.

Overlapping syndrome (OS) combines systemic lupus erythematosus, systemic sclerosis, and polymyositis/dermatomyositis, often confused with mixed connective tissue disease (MCTD). Rheumatoid arthritis (RA) is distinct but can rarely co-occur with other CTDs.

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Area of Science:

  • Rheumatology
  • Immunology
  • Internal Medicine

Context:

  • Overlapping syndrome (OS) definition is unclear, leading to confusion with mixed connective tissue disease (MCTD).
  • Distinguishing OS from other connective tissue diseases (CTDs) is crucial for accurate diagnosis and management.
  • Rheumatoid arthritis (RA) is typically a distinct entity but can exceptionally present with other CTDs.

Purpose:

  • To clarify the definition and characteristics of overlapping syndrome (OS).
  • To differentiate OS from mixed connective tissue disease (MCTD).
  • To explore the rare associations between rheumatoid arthritis (RA) and other connective tissue diseases (CTDs).

Summary:

  • Overlapping syndrome (OS) involves combinations of systemic lupus erythematosus (SLE), progressive systemic sclerosis (PSS), and polymyositis (PM) or dermatomyositis (DM).

Related Experiment Videos

  • OS is often misdiagnosed as mixed connective tissue disease (MCTD) due to ambiguous definitions.
  • Rheumatoid arthritis (RA) is a separate condition, though rare instances of its association with SLE, PSS, and other CTDs exist, including psoriatic arthritis and arthritis with immunodeficiencies.

    • Impact:

    • Improved diagnostic criteria for OS and MCTD.
    • Enhanced understanding of the complex interplay between different connective tissue diseases.
    • Better recognition of rare rheumatoid arthritis (RA) presentations and associated conditions like osteoporosis and Sjogren's syndrome.