Table 2.

Calculation of the Severity-of-Illness Score for Toxic Epidermal Necrolysis (SCORTEN) in our patient

Risk factor	Score		Patient score
Risk factor	0	1	Patient score
Age	< 40 years	> 40 years	1
Associated malignancy*	No	Yes	0
Heart rate (beats/min)	< 120	≥ 120	1
Serum urea (mg/dL) [mmol/L]	≤ 28 [10]	> 28 [10]	1
Detached or compromised body surface	< 10%	≥ 10%	1
Serum bicarbonate (mEq/L)	≥ 20	< 20	0
Serum glucose (mg/dL) [mmol/L]	≤ 250 [14]	> 250 [14]	0
Total			4

More risk factors result in a higher score and a higher mortality rate (%) as follows:

0–1 = 3.2% (CI: 0.1-16.7)

2 = 12.1% (CI: 5.4-22.5)

3 = 35.5% (CI: 19.8-53.5)

4 = 58.3% (CI: 36.6-77.9)

≥5 = 90% (CI: 55.5-99.8)

CI: Confidence Interval [42, 43]

^aMalignancy: evolving cancer and hematological malignancies