Table I.
Symptoms of orthostatic intolerance
| Lightheadedness |
| Headache |
| Fatigue |
| Neurocognitive/sleep disorders |
| Exercise intolerance |
| Weakness |
| Hyperpnea/dyspnea |
| Tremulousness |
| Nausea/abdominal pain |
| Sweating |
| Anxiety/palpitations |
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