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Mixed connective tissue disease presenting myasthenia gravis
1Department of Clinical Immunology, Kyushu University, Oita, Japan.
Internal Medicine (Tokyo, Japan)
|August 1, 1993
Summary
This study details a rare association between myasthenia gravis (MG) and mixed connective tissue disease (MCTD), also involving Sjögren
Area of Science:
- Rheumatology
- Neurology
- Immunology
Background:
- Myasthenia gravis (MG) is an autoimmune disorder affecting neuromuscular junctions.
- Mixed connective tissue disease (MCTD) is a rare autoimmune condition with overlapping features of other connective tissue diseases.
- Sjögren's syndrome (SjS) is a chronic autoimmune disease primarily affecting glands.
Observation:
- A 41-year-old female patient presented with co-existing myasthenia gravis (MG) with anti-acetylcholine receptor (AcR) antibody, mixed connective tissue disease (MCTD), and Sjögren's syndrome (SjS).
Findings:
- The literature review indicated that the association of MG and MCTD is rare, with only two previously reported cases fulfilling MCTD diagnostic criteria.
- Sjögren's syndrome (SjS) may be an underlying pathological factor contributing to the association between MG and various connective tissue diseases, including MCTD.
Implications:
- This case highlights the importance of considering co-existing autoimmune conditions in patients with MG, MCTD, or SjS.
- Further research is warranted to elucidate the shared pathophysiological mechanisms linking these autoimmune disorders.
- Recognition of these associations can improve diagnostic accuracy and patient management.