Differential diagnosis of postural tachycardia syndrome symptoms
| Hyperthyroidism |
| Infection |
| Pheochromocytoma |
| Inappropriate sinus tachycardia |
| Acute dehydration |
| Exercise |
| Physical deconditioning |
| Panic attacks |
| Pain |
| Alcohol |
| Caffeine |
| Medication-induced or exacerbated |
Information from references 39–41.