Inflammatory Back Pain in Patients Treated with Isotretinoin
Bibliographic record
Abstract
To the Editor: Despite the positive effects of isotretinoin on a number of cancers and severe skin conditions, several disorders of the musculoskeletal system have been reported in patients who are treated with it. Reactive seronegative arthritis and sacroiliitis are very rare side effects1,2,3. We describe 4 cases of inflammatory back pain without sacroiliitis after a month of isotretinoin therapy. We observed that after termination of the isotretinoin therapy, patients’ complaints completely resolved. Musculoskeletal system side effects reported from isotretinoin treatment include skeletal hyperostosis, calcification of tendons and ligaments, premature epiphyseal closure, decreases in bone mineral density, back pain, myalgia and arthralgia, transient pain in the chest, arthritis, tendonitis, other types of bone abnormalities, elevations of creatine phosphokinase, and rare reports of rhabdomyolysis. Musculoskeletal symptoms are common with isotretinoin therapy, but sacroiliitis is a very rare adverse … Address correspondence to Dr. Y. Pehlivan, Gaziantep Universitesi Sahinbey Arastirma Hastanesi, Romatoloji BD, Gaziantep 27310, Turkey. E-mail: drpehlivan{at}hotmail.com
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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 | 0.001 | 0.007 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.002 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.008 | 0.004 |
| Insufficient payload (model declined to judge) | 0.003 | 0.001 |
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".