The number of people who suffer severe systemic allergic reactions is increasing. Pruritus Angio-oedema, especially of the face or larynx, leading to dyspnoea, dysphonia and dysphagia. Severe asthma Urticaria Abdominal cramps and nausea Collapse and unconsciousness.
Severity is unpredictable.
A mild reaction may be followed by a more severe one at a later date. Symptoms may progress rapidly. The patient can develop severe dyspnoea or hypotension in 10-15 minutes from the onset. Severity may be affected by the dose. Even if the diagnosis is in doubt, patients should on no account be advised to test their reaction by eating peanuts.