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Symptoms often occur quickly after coming into contact with nuts.

The person suffering from the allergy may have several symptoms all at the same time. These might include difficultly breathing, vomiting, dizziness and a rapid heartbeat.

If someone has a reaction to nuts their body may go into anaphylactic shock. The sufferer should be treated with an injection of adrenaline (EpiPen) and an ambulance should be called immediately.