Development of Warfarin-Induced, Non-Uremic Calciphylaxis Following Recovery from COVID-19 Infection with Acute Renal Injury – A Report of a Case

Herein we report a case of an obese female presenting with calciphylaxis after a prolonged hospital course due to COVID-19, with multiple complications including now-recovered acute renal failure and deep venous thrombosis requiring treatment with warfarin.Two months after discharge, she presented with new, painful, ulcerated plaques on the thighs and was diagnosed with calciphylaxis.Throughout the COVID-19 pandemic, cutaneous manifestations of SARS-CoV-2 infection have been increasingly characterized, yet non-uremic calciphylaxis is infrequently observed.Despite its rarity, our case highlights the importance of clinician awareness of the potential association of COVID-19 as an additional trigger for calciphylaxis, especially in patients with multiple risk factors.We also urge physicians to be aware of delayed onset in the presentation of calciphylaxis after renal recovery.