RT Journal Article SR Electronic T1 Autoimmunity and postural orthostatic tachycardia syndrome: Implications in diagnosis and management JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 439 OP 447 DO 10.3949/ccjm.90a.22093 VO 90 IS 7 A1 Aboseif, Albert A1 Bireley, J. Daniel A1 Li, Yuebing A1 Polston, David A1 Abbatemarco, Justin R. YR 2023 UL http://www.ccjm.org/content/90/7/439.abstract AB Postural orthostatic tachycardia syndrome (POTS)—sustained tachycardia upon standing without orthostatic hypotension—can be diagnosed clinically without an extensive diagnostic evaluation unless certain atypical features suggest an alternative diagnosis. A unifying pathophysiologic mechanism has not been identified, although several have been proposed. Similarities between POTS and various autoimmune disorders suggest an immune mechanism in a subset of patients. However, no causative antibody has been identified, and associated antibodies are rarely clinically relevant. Moreover, immunotherapies are not currently recommended for POTS, although clinical trials are underway to clarify their utility.