Objective: Single-organ cutaneous small-vessel vasculitis (SoCSVV) is an inflammatory skin-limited vascular disease affecting the dermal and/or hypodermal vessel wall. Pathogenetically, idiopathic forms are described, as well as the induction from different triggers, such as infections, drugs, and vaccines. Following the Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) pandemic outbreak, cases of cutaneous vasculitis induced by both COVID-19 and COVID-19 vaccinations have been reported in literature. The aim of this study is to provide the most recent evidence on new etiological factors, clinical features, and management of the SoCSVV.
Patients And Methods: We included 42 patients (22 women, 20 men) with SoCSVV and no systemic involvement in the study. The mean age of the patients was 57.3 years. Palpable purpura was the most frequent clinical manifestation (38 cases-90.4%). All patients were diagnosed with leukocytoclastic vasculitis by skin biopsy.
Results: The etiological factors were as follows: idiopathic in 9 (21%) patients, drug-related in 19 (45%) patients, COVID-19 infection-related in 5 (12%) patients, post-COVID-19 vaccination in 5 (12%) patients, paraneoplastic in 2 (5%) patients, and drug and infection and sepsis in 1 patient each. Among the drug-related cases, 16 (84%) were antibiotic-related, and most of them were beta-lactam antibiotics. Eosinophilia was present in skin biopsy in the cases related to vaccination and drugs, while intense necrosis and vascular damage in the skin were observed in the cases related to COVID-19 infection, unlike the others. A rapid resolution was observed with the cessation of drugs and short-term steroid treatment for the precipitating factors.
Conclusions: SoCSVV is usually associated with drugs, preceding infections, and vaccines. COVID-19 infection and COVID-19 vaccinations have been reported as new etiological factors. SoCSVV indicates that the disease seems to be a mild, self-limiting illness with a good clinical result.
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