Some people with pollen allergies can also experience reactions to certain raw fruits and vegetables because of a phenomenon called pollen-food allergy syndrome. Cooking may change the proteins responsible for some of these reactions, although this does not mean cooked cucumber is automatically safe for everyone.
Anyone who has previously experienced a significant allergic reaction after eating cucumber should not simply “test it again” at home.
If symptoms such as swelling of the lips or throat, difficulty breathing, dizziness or widespread hives occur after eating a food, seek urgent medical attention.
Bottom line: People with a known cucumber allergy should avoid cucumber and discuss safe alternatives with an allergy specialist.