“…44 Since the onset of the COVID-19 pandemic, an increasing number of case reports about the occurrence of POTS secondary to a COVID-19 infection have emerged. [24][25][26][27][28][29][30] Several hypotheses about possible pathomechanisms of POTS or dysautonomia in general after COVID-19 infection have been proposed: imbalance of the renin-angiotensin-aldosterone system, 26,29 brainstem involvement, 43,45,46 autoreactivity to antibodies against SARS-CoV-2, 25,43,47 dyshomeostasis of immune response 42,44 and denervation of peripheral sympathetic nerve fibers. 26,43,42 This study has some limitations.…”