Classification | Diagnostic criteria |
Almost no reaction (±) | Suspicious symptoms (±) or total scores 0 - 5 |
Mild reaction (+) | Slight symptoms (+) or total scores 6 - 15 |
Moderate reaction (++) | More serious symptoms (++) or total scores 16 - 25 |
Severe reaction (+++) | Very serious symptoms (+++) or total scores ≥ 26 |