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| Premonitory signs and symptoms | No (%) of patients |
|---|---|
| Discomfort, tension, diffuse pain | 41 (36) |
| Feeling of exhaustion | 27 (24) |
| Mood disorders, irritability, dysphoria | 22 (22) |
| Paraesthesias | 15 (13) |
| Yawning, sighs | 10 (9) |
| Changes in feeding behaviour | 9 (8) |
| Polyuria, polydipsia | 8 (7) |
