Some people mistake having Celiac disease or gluten intolerance for having a gluten allergy. While some people do have wheat allergies, there is a difference. Allergies are an immediate reaction to ingesting a food. Upon eating the trigger food, histamine is released causing various symptoms from swelling, asthma, and itching to respiratory distress and shock.
Celiac disease/gluten intolerance has a delayed type of immune reaction, even though some people can feel it pretty quickly when they ingest gluten.
So, technically, there isn’t a “gluten allergy.” There is wheat allergy and gluten intolerance/celiac disease. Kinda complicated.