pediatric allergies Flashcards
Typically rapid in onset, Skin, GI tract, Respiratory tract, Anaphylaxis
IgE mediated rxns
length of duration of the following allergies: Peanuts, Tree nuts, fish, Shellfish
lifelong
length of duration of the following allergies: cow’s milk, eggs, soybean, wheat
80% resolve by age 5
Occur hours to days after exposure. Typically presents in infants. Can present as chronic skin conditions or most commonly manifests as GI symptoms
non-IgE mediated reactions
associated with food allergies
atopic dermatitis and acute urticaria
appropriate initial tests for food allergy
serum specific IgE testing or skin prick testing
Gold standard for diagnosis of food allergy
A double-blind, placebo controlled food challenge
The patient is given gradually increasing amounts of the suspected food allergen over a time period of hours to a day
oral food challenge
A positive reaction is defined as a wheal at least 3mm greater than the negative control
Skin prick testing
cannot be performed on skin with extensive eczema/rash or in patients with dermatographia
skin prick testing
Detection of serum IgE to specific allergens
serum specific IgE testing
currently used to diagnose delayed hypersensitivity T-cell mediated reactions such as contact dermatitis. not recommended for food allergy testing
atopy patch tests
provide evidence of sensitization and help determine when a challenge is appropriate
skin tests and serum specific IgE
How should an epi pen be administered?
IM in the thigh
IgE-mediated reaction that affects the oropharynx
It is thought to occur from the cross-reactivity between proteins present in pollens and those expressed by fruits and vegetables
Pollen-food allergy syndrome (PFAS), also known as oral allergy syndrome (OAS)