Table 1

 Presenting signs of 76 severe anaphylactic reactions

Presenting signsNumber
*One also reported “difficult ventilation”.
†Two also reported “difficult ventilation”.
Hypotension: includes a documented fall in systolic blood pressure, unrecordable blood pressure, and impalpable pulses.
Bronchospasm: includes documented bronchospasm or difficulty with ventilation.
Skin/mucosal signs: includes rash, urticaria, oedema, or swelling of any part of the patient (including tongue and airway).
Hypotension + skin signs21†
Hypotension + bronchospasm + skin signs12
Hypotension + bronchospasm4
Skin/mucosal signs4
Bronchospasm + skin signs2