A Case Report of Tadalafil-Associated Fixed Drug Eruption
Bibliographic record
Abstract
Tadalafil is a drug approved for use in erectile dysfunction, but increasingly being used recreationally. There have only been scant case reports on tadalafil causing fixed drug eruption (FDE). Patients who use tadalafil recreationally are less likely to seek medical attention and the diagnosis can often be missed, given the difficulty in diagnosis. However, clinical examination together with a detailed medication history can provide clinicians with good evidence of the association without invasive biopsies. We discuss a 37-year-old male who developed FDE after 2 separate exposures to tadalafil used for recreational purpose. The scar from the first reaction served as a landmark for the second exposure. His lesions resolved 2 days after the initial presentation. The Naranjo adverse drug reaction probability scale (score = 9) indicates a definite adverse drug reaction to tadalafil. We hope to raise awareness of this drug reaction with this case report.
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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 | 0.003 |
| Meta-epidemiology (narrow) | 0.003 | 0.002 |
| Meta-epidemiology (broad) | 0.002 | 0.002 |
| Bibliometrics | 0.004 | 0.003 |
| Science and technology studies | 0.004 | 0.002 |
| Scholarly communication | 0.004 | 0.004 |
| Open science | 0.002 | 0.003 |
| Research integrity | 0.010 | 0.006 |
| Insufficient payload (model declined to judge) | 0.004 | 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".