Toxic Epidermal Necrolysis (TEN) Associated with covid-19 Infection, a Case Report

Introduction: Covid-19 infection has been spreading worldwide since December 2019. Skin manifestations are common as 60% of patients had skin involvement such as rashes, chilblains, urticaria, purpura and vasculitis (1). Toxic Epidermal Necrolysis (TEN) is a life-threatening dermatological disease with > 30% of body surface area involved. TEN pathophysiology is linked to immune system activation triggered by drugs or infections or unknown causes (2). We are reporting a case of biopsy confirmed TEN in pediatrics patient with history of recent Covid-19 infection.

Case Description: A 6-year-old boy with history of mild Covid 19 infection two weeks ago presented with fever, oral ulcers and maculopapular rash on the trunk and extremities for 2 days. He was admitted for supportive care. His skin rash was progressing to violaceous targetoid lesions on the trunk and extremities with genital erosion, Nickolsky sign was positive. He had purulent conjunctivitis and crusted lips lesions with de-epithelization of the oral mucosa. SCROTEN score was 2 for detachment more than 30%, low bicarbonate of 19. All virology tests came out negative including respiratory and blood PCR testing. A 4-mm punch skin biopsy histopathology was consistent with TEN. He was treated with supportive care, IVIG 1 g/Kg daily for 5 days, IV dexamethasone shifted later to oral Prednisolone, Cyclosporin 3 mg/kg/day. His rash and oral mucositis improved within 1 week and he was discharged in stable condition. He was seen in the clinic after 1 month of discharge and recovery of the skin, oral and eye mucosa was observed.

Discussion: This report presented a case of a child with TEN and history of recent Covid-19 infection. Most cases of TEN are triggered by drugs and some by infections (3)(4). There were case reports of TEN associated with Covid 19 infection in adults with probable association with drugs such as hydroxychloroquine (3), Allopurinol (5), Lamotrigine (6), one case with no history of drug exposure (7). In a report of more than 5000 pediatrics patients with Covid-19 infection only one patient had SJS (8). Another case of 8-year-old boy with Covid-19 infection who developed SJS rash was reported (9). Both pediatrics cases had history of Amoxicillin- Clavulanate use. In our case the relationship between Covid-19 infection and TEN is not clear as the child had a history of Ibuprofen use that could be the culprit trigger. However, Covid-19 could still be the trigger in this case. It is worth reporting this case to keep in mind the wide spectrum of dermatological presentation in Covid-19 patients.

Conclusion: Whether Covid 19 infection can trigger TEN in pediatrics patient is an important question that needs larger studies, yet it is worth reporting this case of possible correlation between Covid 19 and TEN in pediatrics.