With POTS, your heart rate increases when you go from sitting to standing or lying down to standing. Learn more about POTS and how to test yourself for it.
Palpitations, dizzy spells and blackouts - Dr Diana Holdright
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Dizzy spells when you stand up: When should you worry? - Harvard Health
Dizzy When Standing up: 7 Causes and How to Handle It
Reality star Bethenny Frankel details her battle with postural orthostatic tachycardia syndrome (POTS) - ABC News
POTS Syndrome: Ultimate Patient Guide by Cardiologist • MyHeart
PoTS: Rare condition 'robbing' County Down girl of childhood
An Explainer on POTS for Dysautonomia Awareness Month
Vasovagal Syncope: Why It Happens and How to Treat It
Do I Have Postural Orthostatic Tachycardia Syndrome (POTS)? - Dr. Nicholas L. DePace, M.D., F.A.C.C.
Postural Orthostatic Tachycardia Syndrome - POTS Syndrome
Syncope (medicine) - Wikipedia