| Orthostatic hypotension | Fall in systolic BP ≥20 mm Hg or diastolic ≥10 mm Hg within 3 minutes of standing |
| Postprandial hypotension | Worsening of hypotension after meals due to splanchnic vasodilation |
| Supine hypertension | Paradoxical high blood pressure when lying down |
| Reflex tachycardia | Inadequate or absent compensatory heart rate increase |
| Databases | OMIMOrphanetClinicalTrialsPubMed |