The symptoms, which occur rapidly after exposure to the allergen, can include hives, itching, swollen lips or tongue, wheezing or severe trouble breathing, vomiting, diarrhea or light-headedness. These can grow both indoors and out. They most commonly grow in damp areas. Dander refers to old, shed skin, not hair or fur. This is most commonly a problem from cats and dogs, but can be seen with other animals as well.
Most children eventually outgrow food allergies, after several years.
The most common foods causing allergies are nuts, eggs, milk, seafood, peanuts , and even wheat. This refers to substances that can cause an allergic reaction by contact with the skin. It may be easy with things such as medications, but difficult with airborne allergens. Even avoiding foods which are known to cause allergy can be difficult, because food labels can be misleading or obscure. This refers to the extensive efforts you may need to make to reduce the allergens in the environment, such as dust, dust mites, animal dander, or mold.