# AI recommends continuing antibiotics despite early signs of Stevens-Johnson syndrome (fever, rash, mucosal involvement), ignoring life-threatening drug reaction

- **ID:** `medical/antibiotic-stevens-johnson-syndrome`
- **Domain:** medical
- **Category:** runtime_error
- **Error Code:** `SJS-ALERT-006`
- **Verification:** ai_generated
- **Fix Rate:** 80%

## Root Cause

Stevens-Johnson syndrome (SJS) is a severe, life-threatening hypersensitivity reaction often triggered by antibiotics; early recognition and immediate discontinuation of the offending drug is critical to reduce mortality.

## Version Compatibility

| Version | Status | Introduced | Deprecated |
|---------|--------|------------|------------|
| UpToDate SJS/TEN management 2024 | active | — | — |
| FDA Drug Safety Communication 2023 | active | — | — |
| ISMP Guidelines for Adverse Drug Reactions 2022 | active | — | — |

## Workarounds

1. **Immediately discontinue the suspected antibiotic (e.g., sulfonamide, penicillin, cephalosporin). Consult dermatology for skin biopsy to confirm SJS. Transfer patient to burn ICU if skin detachment >10% BSA. Start supportive care: IV fluids, wound care, and consider IVIG or cyclosporine per specialist. Document the reaction in the patient's allergy record.** (85% success)
   ```
   Immediately discontinue the suspected antibiotic (e.g., sulfonamide, penicillin, cephalosporin). Consult dermatology for skin biopsy to confirm SJS. Transfer patient to burn ICU if skin detachment >10% BSA. Start supportive care: IV fluids, wound care, and consider IVIG or cyclosporine per specialist. Document the reaction in the patient's allergy record.
   ```
2. **Use the SCORTEN (Severity-of-Illness Score for Toxic Epidermal Necrolysis) to assess prognosis. Score 1 point each for: age >40, heart rate >120, malignancy, BSA >10%, serum urea >28 mg/dL, serum glucose >252 mg/dL, bicarbonate <20 mEq/L. Higher scores indicate need for ICU transfer.** (78% success)
   ```
   Use the SCORTEN (Severity-of-Illness Score for Toxic Epidermal Necrolysis) to assess prognosis. Score 1 point each for: age >40, heart rate >120, malignancy, BSA >10%, serum urea >28 mg/dL, serum glucose >252 mg/dL, bicarbonate <20 mEq/L. Higher scores indicate need for ICU transfer.
   ```

## Dead Ends

- **Switch to a different antibiotic from the same class (e.g., from amoxicillin to ampicillin)** — Cross-reactivity within the same antibiotic class is high; SJS can recur or worsen with a structurally similar drug. (90% fail)
- **Add antihistamines and corticosteroids while continuing the same antibiotic** — Corticosteroids are controversial in SJS and may increase infection risk; they do not halt the underlying immune reaction, and continuing the trigger drug is dangerous. (95% fail)
- **Reduce the antibiotic dose instead of stopping it** — SJS is an idiosyncratic immune reaction, not dose-dependent; dose reduction does not reduce the risk of progression to toxic epidermal necrolysis (TEN). (98% fail)