What is postural orthostatic tachycardia syndrome (POTS)?

Postural Orthostatic Tachycardia Syndrome (POTS) is often a puzzling condition, the causes of which can be extremely difficult to pinpoint, and it can significantly incapacitate individuals.
Postural Orthostatic Tachycardia Syndrome (POTS) is often a puzzling condition, the causes of which can be extremely difficult to pinpoint, and it can significantly incapacitate individuals.