Medically, they are referred to as an IgE mediated food allergy ... be easily confused with those of an intolerance – such as rashes and itchy skin, diarrhoea and sickness.

Contact urticaria (immunologic) Minutes to 1 hour Hours to 1 day IgE-mediated release of vasoactive mediators (including histamine). May be associated with atopic patients. Often worse with each ...

There are four types of hypersensitivity reactions, which include Type I, immediate-type-IgE-mediated reactions; Type II, antibody-mediated reactions; Type III, immune complex deposition reactions ...