Doctors tell patients to eat Avocado More you eat the healthy you are? An oral avocado allergy is triggered when you eat avocado and your body treats the food as an invader, alerting your immune system. Your body reacts with mild to severe allergy symptoms, such as itching of your lips, mouth, and throat. You could have an oral avocado allergy if you are also allergic to birch pollen casual and country style wears for a wedding