Postural Orthostatic Tachycardia Syndrome (POTS)

Postural Orthostatic Tachycardia Syndrome, often shortened to POTS, is a condition that effects the ANS (Autonomic Nervous System). There's multiple sub-types, but many POTS patients have overlapping subtypes or don't fit into any specific subtype. Symptoms are also generally nonspecific and effect the whole body, which can make POTS very difficult to diagnose. Average diagnosis time is around 5 years and it's often misdiagnosed. POTS is often tested for via a tilt table test or certain autonomic function tests.
There isn't a cure nor are there any FDA approved treatments for POTS syndrome, but increased sodium and water intake can up blood volume which increases blood pressure and can help prevent certain symptoms, notably pre-syncope and syncope. Off-label use (drugs approved for other conditions being used for conditions they aren't approved for.) of many drugs is also common.
POTS Wikipedia Page