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Perceived triggering events of FM onset (in descending order of frequency)
| Event | Frequency |
| Chronic stress | 41.9% |
| Emotional trauma | 31.3% |
| Acute illness | 26.7% |
| Physical injury (non-MVA) | 17.1% |
| Surgery | 16.1% |
| Motor vehicle accident (MVA) | 16.1% |
| Emotional and physical abuse as an adult | 12.2% |
| Emotional and physical abuse as a child | 11.9% |
| Thyroid problems | 10.3% |
| Menopause | 10.1% |
| Sexual abuse as a child | 8.7% |
| Childbirth | 7.6% |
| Sexual abuse as adult | 2.9% |
