| Similarity | Rank | |
|---|---|---|
| unexplained | 0.829 | 23838 |
| Sudden | 0.757 | 33268 |
| Abnormal | 0.743 | 51212 |
| Irritability | 0.726 | 96534 |
| Dizziness | 0.724 | 67144 |
| Unusual | 0.723 | 38082 |
| Painful | 0.720 | 51649 |
| Headaches | 0.718 | 43106 |
| Insomnia | 0.709 | 40461 |
| Headache | 0.707 | 41235 |
| Causes | 0.707 | 16189 |
| Recurrent | 0.706 | 70484 |
| Vomiting | 0.704 | 65851 |
| Symptoms | 0.701 | 11692 |
| Severe | 0.699 | 24105 |
| Unexpected | 0.693 | 37926 |
| Fatigue | 0.689 | 29424 |
| Seizures | 0.685 | 70187 |
| Sickness | 0.685 | 53137 |
| Confusion | 0.685 | 39564 |
| Nausea | 0.678 | 47451 |
| Exhaustion | 0.675 | 89462 |
| unexplainable | 0.671 | 52604 |
| Menstrual | 0.671 | 83221 |
| Unnatural | 0.669 | 99726 |