Common food allergens in India include eggs, fish, milk, soybean and shellfish (shrimp, oyster, crabs, etc). Food allergies can cause 30,000 emergency treatments and about 200 deaths per year in the country. Severe food allergy symptoms include weak or rapid pulse, shock with a severe drop in blood pressure and loss of consciousness. We ask experts about food allergy reactions and the difference between food allergy and intolerance.