Avoid: Shell fish, eggs, mayonnaise, chocolate, cheese, spinach, tomatoes, ketchup, strawberries, yogurt, preprocessed meats such as hot dogs, spam, bologna, luncheon meats, sausages, spicy foods, pizza, spaghetti, preservative rich foods, fermented foods, artificial colors and flavors and sweetners. This makes me very depressed. I also have to take one 10mg tab of Zyrtec before bed. Chronic urticaria or chronic hives suck.