| Triggering factors | Number of cases | Percentage |
| diarrhea | 21 | 22.8 |
| Constipation | 60 | 66.3 |
| Pregnancy | 5 | 5.4 |
| Menstruation | 3 | 3.3 |
| Alcohol | 3 | 2.2 |
| Total | 92 | 100 |