Grade 0 Strong local reaction, diameter larger than 10 cm, longer than 24 h
Grade I Generalized urticaria, pruritus, nausea
Grade II Vomiting, angioedema, dizziness, sensation of tightness
Grade III Dyspnea, stridor, wheezing, fear of dying, weakness, drowsiness
Grade IV Drop in blood pressure, cyanosis, respiratory arrest, circulatory arrest
Table 1: Severity of allergic reactions based on Müller et al. [7].
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