Table 1. Frequency of symptoms in patients with HYCH and POTS.
| Symptom | HYCH | POTS |
|---|---|---|
| Lightheadedness | 15 | 14 |
| Dry mouth or dry eyes | 11 | 9 |
| Pale or blue feet | 7 | 10 |
| Feet colder than the rest of body | 13 | 8 |
| Decreased sweating at feet at rest | 5 | 4 |
| Decreased sweating at feet after exercise or during hot weather | 5 | 4 |
| Sweating increased at hands | 7 | 9 |
| Nausea, vomiting or bloating after meal | 9 | 9 |
| Persistent diarrhea | 9 | 8 |
| Persistent constipation | 8 | 8 |
| Leaking of urine | 6 | 5 |
| Difficulties in erection (man) | 0 | 0 |
| Aching pain | 14 | 12 |
| Allodynia | 3 | 2 |
| Burning pain | 4 | 3 |
| Lancinating pain | 5 | 5 |
| Numbness | 12 | 9 |
| Prickling sensation | 5 | 3 |