Food allergies are quite common these days and some skin allergies caused due to foods should be viewed seriously since it might be life threatening. Food allergies might be caused due to family history, genetic disorder or food specific disorders. Some people will sick and suffer from skin allergies when they eat food spices like garlic and cinnamon. Now there is good news for the people who suffer from variety of allergies caused by food allergy. IgG spices blood test is becoming famous and plenty of patients who suffer from allergic reactions caused by herbs and spices do these types of tests.