Table 1.
Signs and symptoms of anaphylaxis
| Symptoms | All ages [3••] | Children [11] | ||
|---|---|---|---|---|
| Clinical features | Frequency | Clinical features | Frequency | |
| Respiratory | Dyspnea, wheeze | 45 %–50 % | Difficulty/noisy breathing | 83 % |
| Upper airway angioedema | 50 %–60 % | Wheeze | 59 % | |
| Rhinitis | 15 %–20 % | Cough | 33 % | |
| Swelling tongue | 13 % | |||
| Swelling/tightness in throat | 11 % | |||
| Difficulty talking/hoarse voice | 13 % | |||
| Cutaneous | Urticaria, angioedema | 85 %–90 % | Urticaria | 72 % |
| Flushing | 45 %–55 % | Angioedema | 55 % | |
| Pruritus without rash | 2 %–5 % | Pruritus | 11 % | |
| Gastrointestinal | Nausea, vomiting, diarrhea, cramping pain | 25 %–30 % | Vomiting, diarrhea, abdominal cramps | 29 % |
| Cardiovascular | Dizziness, syncope, hypotension | 30 %–35 % | Hypotension, pale and floppy, impaired/loss of consciousness, collapse | 17 % |