A member asked:

What can cause pots disease (postural orthostatic tachycardia syndrome)?

6 doctors weighed in across 2 answers

Adrenergic stimulati: Abnormal and excessive secretion of catecholamines due to sympathetic nervous system stimulation secondary to changes in position (due to gravity effects on circulating intravascular volume). This unchecked catecholamine surge causes a stimulation of heart rate.

Answered 5/4/2015

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Dr. William Scott answered

Specializes in Pediatric Cardiology

Unclear: The exact cause of pots is not known. One theory is that it occurs after a viral infection, even one that is very minor.

Answered 11/22/2014

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