
Dozens of foods can cause allergic reactions. Milk is one of the most common allergenic foods. Under U.S. law, foods containing a major food allergen must have labels that identify these ingredients. Click through this gallery to see the major food allergens, which account for more than 90% of allergic reactions to food:

Allergic reactions include hives, rashes, itching, vomiting and swelling, according to the Food and Drug Administration. Eggs are another common food allergen.

Many people are also allergic to fish. There is no cure for food allergies. People with food allergies and sensitivities should carefully read labels.

Shellfish such as crab, lobster and shrimp are among the major food allergens. The Food Allergen Labeling and Consumer Protection Act only identifies eight allergens, but more than 160 foods are known to cause allergies or sensitivities, according to the FDA.

Tree nuts such as almonds, pictured, walnuts and pecans are a frequent source of allergic reactions. Even a trace amount can be dangerous to some individuals.

Some airlines choose not to carry peanuts in flight due to passengers with allergies.

Wheat is another top food allergen. It is an ingredient found in many foods, including breads, cereals, flours and even some beverages.

Soybean allergies are particularly common in babies and children. Many children outgrow their sensitivity, but the allergy can continue into adulthood.

