Factors Predicting the Outcome of Stevens-Johnson Syndrome and Toxic Epidermal Necrolysis: A 5-Year Retrospective Study.

Background: Clinicodemographic and laboratory parameters predicting the outcome of Stevens-Johnson syndrome (SJS)/toxic epidermal necrolysis (TEN) may vary among populations owing to genotypic and environmental variations. There is a scarcity of studies evaluating these parameters in Indian population.

Aims: To analyze clinicodemographic and laboratory parameters predicting disease outcome in patients of SJS/TEN.

Materials And Methods: Clinical records of patients admitted with a diagnosis of SJS/TEN from January 2014 to December 2018 were reviewed retrospectively with respect to data pertaining to clinicodemographic details, laboratory parameters, and disease outcome.

Results: Of 51 patients included in the study, 24 (47.06%) were females. Anticonvulsants [phenytoin (19.6%), carbamazepine (13.7%), others (5.88%)] were the most commonly implicated drugs followed by NSAIDs (19.6%). The overall mortality was 21.6% [SJS (0%), SJS-TEN overlap (18.8%), and TEN (28.6%)]. The mean detached body surface area (BSA) (35.4% ± 10.4% vs. 25.7% ± 11.8%; = 0.02) was significantly higher among patients with mortality. Blood urea nitrogen, serum HCO levels, and random blood sugar were significantly associated with mortality. Presence of sepsis during the disease course was associated with higher mortality (9/12 vs. 2/39; = 0.001). Other components of SCORTEN like age and heart rate were not significantly associated with poor outcome in our study. None of our patients had associated malignancy.

Conclusion: A higher detached BSA, presence of sepsis, higher blood urea nitrogen and random blood sugar, and lower serum HCO levels were associated with mortality. Refinement of scoring systems predicting the outcome of SJS-TEN is needed for better disease prognostication.