A case of severe allergic reaction to cooked potato

White potato is a very common ingredient in the diet of infants in Mediterranean countries, and in its cooked form, it is one of the first solid foods introduced, usually around the age of 4-6 months. Allergy to potato is uncommon, and allergic reactions to cooked potato have been reported only in children. We report a case of severe potato-induced allergic reaction in an 8-month-old infant with atopic dermatitis and multiple food allergies that raises questions about differential diagnosis between anaphylaxis and food protein-induced enterocolitis syndrome (FPIES).

Allergy to cooked potatoes could be a cause of severe although rare allergic reactions; it could be very difficult, in some cases, to make a differential diagnosis between anaphylaxis and FPIES. Moreover, the diagnosis appears to be very important for the choice of therapy and long-term allergologic management.