Frequency of five unusual presentations in patients with COVID-19: results of the UMC-19-S1
Despite SARS-CoV-19 infection has a stereotypical clinical picture, isolated cases with unusual manifestations have been reported, some of them being well-known to be triggered by viral infections. However, the real frequency in COVID-19 is unknown. Analysing data of 63 822 COVID patients attending 50 Spanish emergency department (ED) during the COVID outbreak, before hospitalisation, we report frequencies of (myo)pericarditis (0.71), meningoencephalitis (0.25), Guillain-Barré syndrome (0.13), acute pancreatitis (0.71) and spontaneous pneumothorax (0.57). Compared with general ED population, COVID patients developed more frequently Guillain-Barré syndrome (odds ratio (OR) 4.55, 95% confidence interval (CI) 2.09-9.90), spontaneous pneumothorax (OR 1.98, 95% CI 1.40-2.79) and (myo)pericarditis (OR 1.45, 95% CI 1.07-1.97), but less frequently pancreatitis (OR 0.44, 95% CI 0.33-0.60).