Can geographic tongue be a food allergy or intolerance?

Yes : It is usually a chronic condition exacerbated by certain food, stress, or hormonal influences in women (menstruating). Foods can include spicy foods, sour foods, citrus, walnuts, eggplant, tomato , sharp cheese, among others. Many of them are high in natural salicylates- found in aspirin. Do a search for foods to avoid online and see if avoidance helps.

No: This is also known as benign migratory glositis, and its cause is unknown. It is something your born with. Foods do not cause this, nor is it the same as an allergic reaction. Certain food can cause pain when you have an exacerbation. Avoid spicy foods, and vinegar based salad dressings, for instance.