Postural Tachycardia Syndrome: The hallmark of this syndrome is an exaggerated heart rate increase in response to postural change without hypotension.
Clinical symptoms of POTS widely vary and are nonspecific: dizziness, lightheadness, weakness, blurred vision, and fatigue in an orthostatic nature.
Other diagnoses in this differential consider:
- Autonomic neuropathies
- Central dysautonomias
- Bedrest deconditioning