When a person gets up from a seated or laying posture, they may experience a set of symptoms known as Postural Orthostatic Tachycardia Syndrome (POTS). The main symptom of postural orthostatic hypotension (POTS) is a rapid and severe rise in heart rate (tachycardia) that happens shortly after standing up.
In particular, orthostatic tachycardia occurs when, in the absence of other causes (such as acute dehydration, prolonged bed rest, or medication...