Pseudo-allergies

In addition to allergic diseases, there are the so called pseudo-allergies. These maladies have similar symptoms with allergies (i.e. skin rash, itching, sneezing, runny nose, coughing, wheezing etc.). The difference from a real allergy is that they are not caused by IgE. Very often pseudo-allergies occur in non-atopic people (no history of allergy in the family).