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Allergies Home Page arrow About Allergies arrow Children and Allergies arrow Common Childhood Allergies
Common Childhood Allergies PDF Print E-mail
The causes of allergies are not fully understood. Your child can get allergies from coming into contact with allergens. Allergens can be inhaled, eaten, injected (from stings or medicine), or they can come into contact with the skin.

Some of the more common allergens are:

  • Pollens
  • Molds
  • House dust mites
  • Animal dander and saliva (cat, dog, horse, rabbit)
  • Chemicals used in industry
  • Some foods and medicines
  • Venom from insect stings

The tendency to have allergies is often passed on in families. For example, if you as a parent have an allergy problem, there is a higher than normal chance that your child also will have allergies. This risk increases if both parents are allergic.

Here are common childhood allergies, their triggers and symptoms:


A wide range of things can trigger an asthma attack. These include cigarette smoke, viral infections, pollen, dust mites, furry animals, cold air, changing weather conditions, exercise, and even stress.

Coughing, wheezing, difficult breathing; coughing with activity or exertion; chest tightness.

Hay Fever

Triggers: Pollen from trees, grasses, or weeds.

Symptoms: Stuffy nose, sneezing, and a runny nose; breathing through the mouth because of stuffy nose; rubbing or wrinkling the nose and facial grimacing to relieve nasal itch; watery, itchy eyes; redness or swelling in and under the eyes.

Food Allergies

Triggers: Any foods, but the most common are eggs, peanuts, milk (see information on milk allergies), nuts, soy, fish, wheat, peas, and shellfish.

Symptoms: Vomiting, diarrhea, hives, eczema, difficult breathing, and possibly a drop in blood pressure (shock).

Eczema (atopic dermatitis)

Triggers: Sometimes made worse by food allergies, contact with allergens (pollen, dust mites, furry animals), irritants, sweating.

Symptoms: A patchy, dry, red, itchy rash that often occurs in the creases of the arms, legs, and neck; however, in infants it often starts on the cheeks, behind the ears, and on the thighs.


Triggers: Viral infections, food allergies, and drugs (such as aspirin, penicillin, or sulfa) but cause is often unknown.

Symptoms: Itchy, mosquito-bite-like skin patches that are more red or pale than the surrounding skin. Hives may be found on different parts of the body and do not stay at the same spot for more than a few hours.

Contact Dermatitis

Triggers: Contact with a plant substance such as poison ivy or oak, household detergents and cleansers, and chemicals in some cosmetics and perfumes.

Symptoms: Itchy, red, raised patches that may blister if severe. Most of these patches are confined to the areas of direct contact with the allergen.

American Academy of Pediatrics

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