Vascular skin manifestations in patients with severe COVID-19 in intensive care units: a monocentric prospective study

BACKGROUND: Various skin manifestations have been reported during the coronavirus disease 2019 (COVID-19) pandemic. Among these are acral vascular skin lesions in non-severe patients, but few studies have focused specifically on patients with severe COVID-19 admitted to the intensive care unit (ICU). OBJECTIVES: We aimed to assess the frequency of acral vascular skin manifestations (AVSM) in patients admitted to the ICU based on systematic dermatological examination. MATERIALS & METHODS: We conducted a clinical, observational and prospective study in the ICU of Lille University Hospital (France). All adult patients with RT-PCR-confirmed severe acute respiratory syndrome-related coronavirus-2 (SARS-CoV-2) infection were included on May 5(th) and 6(th), 2020. RESULTS: A total of 39 patients with severe COVID-19 were examined (34 males and five females; median age: 61 [55–59]). We observed AVSM in 11/39 patients (28%) including five with acral necrotic lesions, three with haemorrhagic blisters, one with acral live-doid rash, and one with erosive distal lesions. Chilblain or chilblain-like lesions were not seen, unlike ambulatory or non-severe patients described in the literature. There was no difference regarding the median length of stay in the ICU, initial symptoms of COVID-19 or baseline characteristics, except for a lower BMI in patients with AVSM. All patients had biological coagulation abnormalities (e.g. higher levels of fibrinogen or D-dimers), but there was no difference between patients with and without AVSM. CONCLUSION: AVSM are infrequent and heterogenous and seem to be non-specific to patients with severe SARS-CoV-2, and possibly unrelated to COVID-19. The pathophysiology of AVSM described during the COVID-19 pandemic is not fully elucidated.