Can you have oral allergy syndrome without hayfever?
I don’t think so, not the full oral allergy syndrome as reaction to pollen is linked to it. The oral allergy syndrome (OAS) is caused by cross-reactivity between proteins in fresh fruits and vegetables and pollens. This syndrome occurs in a large number (up to 70 percent) of people with pollen allergy. The proteins in the fruits and vegetables causing OAS are easily broken down with cooking or processing. Therefore, the OAS typically does not occur with cooked or baked fruits and vegetables, or processed fruits such as in applesauce. There is food allergy but it is called just that.