Sintilimab-induced erythema multiforme drug eruption in the treatment of sigmoid colon cancer: A case report and literature review.

RATIONALE

Dermatologic toxicity has been reported as the most common immune-related side effect of programmed cell death 1 inhibitors. Previous reports related to Sintilimab include rash, pruritus, vitiligo, Stevens-Johnson syndrome, toxic epidermal necrolysis, and so on.

PATIENT CONCERNS

A 66-year-old man was treated with Sintilimab as monotherapy for sigmoid colon cancer. After the second prescription, he developed a more severe and widespread rash.

DIAGNOSES

The diagnose of erythema multiforme drug eruption induced by Sintilimab was considered.

INTERVENTIONS

The patient received intravenous and oral methylprednisolone, routine antihistamines and topical gluccorticoids.

OUTCOMES

The patient's symptoms were gradually relieved during hospitalization and was discharged following resolution of symptoms. He refused to continue using Sintilimab.

LESSONS

This is the first reported case of Sintilimab-induced erythema multiforme drug eruption. It is advisable to inform patients of potential dermatologic toxicity that may occur after using immune checkpoint inhibitors, so that we may prevent the further development of it and avoid the discontinuation of immune checkpoint inhibitors.