Gluten is a protein in wheat, barley, and rye and is associated with two dietary conditions, celiac disease and non-celiac ...

Like hay fever and environmental allergies, a gluten allergy may cause a runny nose and congestion. Other possible symptoms include abdominal discomfort, and skin rashes, and in extreme cases ...

causes symptoms similar to celiac disease — including bloating, diarrhea, fatigue, headaches and a skin rash — but eating gluten doesn’t harm the intestines. Research also suggests that the ...