Abstract

Autoimmune Addison's disease (AAD) entails a chronic adrenal insufficiency and is associated with an increased risk of severe infections. It is, however, unknown how patients with AAD were affected by the coronavirus disease 2019 (COVID-19) pandemic of 2020-2021. The aim of this study was to investigate the incidence of COVID-19 in patients with AAD in Sweden, the self-adjustment of medications during the disease, impact on social aspects and treatment during hospitalization. Additionally, we investigated if there were any possible risk factors for infection and hospitalization. Questionnaires were sent out from April to October 2021 to 813 adult patients with AAD in the Swedish Addison registry. The questionnaires included 55 questions inquiring about COVID-19 sickness, hospital care, medications, and co-morbidities, focusing on the pre-vaccine phase. Among the 615 included patients with AAD, COVID-19 was reported by 17% of which 8.5% required hospital care. Glucocorticoid treatment in hospitalized patients varied. For outpatients 85% increased their glucocorticoid dosage during sickness. Older age (p=0.002) and hypertension (p=0.014) were associated with an increased risk of hospital care while younger age (p<0.001) and less worry about infection (p=0.030) correlated with a higher risk of COVID-19. In the largest study to date examining AAD during the COVID-19 pandemic, we observed that although one fifth of the cohort contracted COVID-19 few patients required hospital care. A majority of the patients applied general recommended sick-rules despite reporting limited communication with healthcare during the pandemic.

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