Quick Scoop

The most common allergies are seasonal allergies, food allergies, skin allergies, insect sting allergies, and indoor-allergen allergies like dust mite or pet dander allergy. Among food allergies, the most commonly listed ones are milk, egg, peanut, tree nut, soy, wheat, fish, shellfish, and sesame allergies.

Most Common Types

  • Seasonal allergies: Often called hay fever or allergic rhinitis; pollen is a major trigger.
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  • Food allergies: Common examples include milk, egg, peanut, tree nut, soy, wheat, fish, shellfish, and sesame.
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  • Skin allergies: Eczema and contact allergies are very common allergic conditions.
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  • Indoor allergies: Dust mites, cockroaches, and pet dander are frequent triggers.
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  • Insect sting allergies: Bees, wasps, hornets, yellow jackets, and fire ants can trigger serious reactions.
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What’s Most Common in Practice

Seasonal allergies are especially widespread: a 2026 report found that in 2024, 31.7% of U.S. adults and 29.5% of U.S. children had diagnosed seasonal allergy, eczema, or food allergy. Another ACAAI fact sheet says nearly 1 in 3 U.S. adults and more than 1 in 4 U.S. children reported seasonal allergy, eczema, or food allergy in 2021.

When to Be Careful

Some allergies can be more than annoying, especially food and insect-sting allergies, because they can cause severe reactions such as swelling, breathing trouble, or anaphylaxis. If someone has trouble breathing or rapid swelling, that is an emergency.

Simple Rule of Thumb

If you want the shortest answer: **pollen, food, dust mites, pets, and insect stings** are the allergy triggers people run into most often.

Meta description: The most common allergies include seasonal pollen allergies, food allergies, dust mite and pet allergies, skin allergies, and insect sting allergies.

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