Index

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TEN Probability

1. Percent of body surface area with skin detachment

>30%

10-30%

<10%

2. Fever (>38°C) in the last 3 days

Present

Absent

3. Mucosal erosions or ulcers (oral, ocular, genital)

Present (multiple sites)

Present (one site)

Absent

4. Positive Nikolsky

Present

Absent

5. Duration of clinical symptoms after discontinuation of suspected drug

≥ 2 weeks

< 2 weeks

6. Burning or itching sensation at the start of disease

Present

Absent

7. Presence of M. pneumonia

Present

Absent

8. Suspected drug causality score (see next page)

≥5 (at least one drug)

3-4 (at least one drug)

1-2 (at least one drug)

<0 (all drugs)

9. Dermatology confirmation

Yes, with biopsy

Yes, w/o biopsy

No

Total TEN Probability

Probable TEN

Score = 12-22

Possible TEN

Score = 7-11

Unlikely TEN

Score = ≤ 6