Typical clinical features of anaphylaxis. One or more features in the left hand box are invariably present, in association with a combination of features in the right hand box
| Laryngeal oedema | Colour change: flushed or pale |
| Bronchospasm | Erythema |
| Fainting and lightheadedness | Pruritis (generalised) Urticaria |
| Cardiovascular collapse | Angioedema |
| Loss of consciousness | Rhinitis |
| Conjunctivitis | |
| Itching of palate or external auditory meatus | |
| Nausea | |
| Vomiting | |
| Abdominal pain | |
| Palpitations |