1990 criteria for the classification of CSS (traditional format), their sensitivity and specificity versus other defined vasculitis syndromes, and features in this reported case (adapted from reference 1)
| Criterion | Sensitivity (%) | Specificity (%) | Reported case features |
| Asthma | 100 | 96.3 | Yes |
| Eosinophilia >10% | 95 | 96.6 | Yes |
| Neuropathy, mono or poly | 75 | 79.8 | Yes |
| Pulmonary infiltrates, non-fixed | 40 | 92.4 | No |
| Paranasal sinus abnormality | 85.7 | 79.3 | No |
| Extra-vascular eosinophils | 81.3 | 84.4 | No |