Beyond the Blot: Diagnostic Challenges in Atypical Dermatomyositis With Overlapping Myasthenia Gravis
Bibliographic record
Abstract
Dermatomyositis (DM) is a rare autoimmune inflammatory myopathy characterized by both cutaneous and muscular involvement, often associated with specific autoantibodies and systemic manifestations. This case report presents a young male patient in the United Kingdom with DM, who had a negative myositis blot, panel of autoantibodies, and also had features of myasthenia gravis (MG). Despite trials of multiple immunosuppressive therapies, severe dysphagia persisted. This case underscores the diagnostic complexity of autoimmune neuromuscular disorders and the importance of early consideration of overlap syndromes when clinical features deviate from the classical DM phenotype and bulbar involvement is present. In a healthcare setting where patients may present with diverse and complex autoimmune profiles, this case highlights the need for vigilance and early recognition of rare overlaps such as DM and MG, which is crucial for optimizing patient care.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.004 | 0.016 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.004 | 0.001 |
| Science and technology studies | 0.002 | 0.002 |
| Scholarly communication | 0.003 | 0.005 |
| Open science | 0.002 | 0.003 |
| Research integrity | 0.003 | 0.004 |
| Insufficient payload (model declined to judge) | 0.002 | 0.002 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".