Management of Food Allergies

Introduction to Food Allergy Management

For children with an elevated IgE level for shellfish, strict avoidance of shellfish, prescription of an epinephrine auto-injector, and referral to an allergist are essential components of management to prevent potentially life-threatening reactions, as recommended by the American College of Allergy, Asthma, and Immunology 1, 2
The American Academy of Pediatrics recommends that children with food allergies, including shellfish allergy, should have a comprehensive evaluation and management plan in place to prevent accidental exposure and severe reactions 2

An elevated IgE level alone doesn't confirm clinical allergy - symptoms must be correlated with exposure, according to the American Academy of Allergy, Asthma, and Immunology 1, 2
The severity of future reactions cannot be accurately predicted by IgE levels or past reaction severity, as stated by the American College of Allergy, Asthma, and Immunology 2
Children with shellfish allergies often show more intense binding to shrimp allergens and greater epitope diversity than adults, making diagnosis and management crucial, as recommended by the American Academy of Allergy, Asthma, and Immunology 2

The American College of Allergy, Asthma, and Immunology recommends that children with shellfish allergies should carry an epinephrine auto-injector at all times and have a written emergency action plan in place 1
Annual follow-up with an allergist is recommended for retesting, as shellfish allergies are less likely to resolve with age, according to the American Academy of Allergy, Asthma, and Immunology 1, 2
Children with food allergies, including shellfish allergy, have higher rates of asthma, which increases anaphylaxis risk, and should be managed accordingly, as recommended by the American College of Allergy, Asthma, and Immunology 2
For severe allergic reactions (anaphylaxis), intramuscular epinephrine is the first-line treatment, while milder reactions can be managed with antihistamines, according to the American Academy of Allergy, Asthma, and Immunology 3
Non-sedating second-generation antihistamines are recommended as an alternative for milder reactions, as advised by the American College of Allergy, Asthma, and Immunology 4

Immediate administration of epinephrine via intramuscular injection in the anterolateral thigh is recommended, with a dose of 0.3-0.5 mg (0.3-0.5 mL) for adults and children ≥30 kg, and 0.01 mg/kg (maximum 0.3 mg) for children <30 kg, according to the American Heart Association 3
Emergency assistance (911) should be called, and the patient should be placed in a recumbent position with lower extremities elevated if tolerated, as recommended by the American Red Cross 3
Supplemental oxygen and IV fluids for volume resuscitation should be provided, as advised by the American College of Emergency Physicians 3, 4
Adjunctive treatments, such as H1 antihistamines (diphenhydramine), H2 antihistamines (ranitidine), corticosteroids, and albuterol for bronchospasm, may be administered after epinephrine, according to the American Academy of Allergy, Asthma, and Immunology 3, 4
The following medications may be prescribed for 2-3 days after discharge: H1 antihistamine (diphenhydramine every 6 hours or non-sedating alternative), H2 antihistamine (ranitidine twice daily), and corticosteroid (prednisone daily), as recommended by the American Academy of Allergy, Asthma, and Immunology 4

All patients who receive epinephrine should be observed in a medical facility for a minimum of 4-6 hours, with extended observation or hospital admission for severe or refractory symptoms, according to the American Academy of Emergency Medicine 4
Patients should be prescribed two epinephrine auto-injectors and provided an anaphylaxis emergency action plan, as recommended by the American Academy of Allergy, Asthma, and Immunology 4
Patients should be monitored for at least 4-6 hours after anaphylaxis due to the risk of biphasic reactions, as stated by the American College of Allergy, Asthma, and Immunology 4

Exercise caution when administering epinephrine to patients with cardiovascular disease, taking monoamine oxidase inhibitors or tricyclic antidepressants, using stimulant medications or cocaine, or with recent intracranial surgery, aortic aneurysm, uncontrolled hyperthyroidism, or hypertension, as advised by the American Heart Association 4
Despite these concerns, the benefit of epinephrine in anaphylaxis outweighs the risks, and there are no absolute contraindications to its use in a life-threatening allergic reaction, according to the American Academy of Allergy, Asthma, and Immunology 3, 4

Patient and family education on proper use of the epinephrine auto-injector, recognition of early symptoms of allergic reactions, and the importance of avoiding cross-reactive shellfish species is crucial, as recommended by the American Academy of Allergy, Asthma, and Immunology 1
Educating children and caregivers about potential cross-reactivity between different shellfish species and the importance of reading food labels carefully can help prevent accidental exposure, according to the American College of Allergy, Asthma, and Immunology 1
Patients should be educated to avoid allergens, use epinephrine auto-injectors properly, and recognize symptoms early, as recommended by the American Academy of Allergy, Asthma, and Immunology 4
Patients with a history of anaphylaxis should receive an anaphylaxis emergency action plan, an epinephrine auto-injector prescription (2 doses), and a plan for monitoring auto-injector expiration dates, as recommended by the American Academy of Allergy, Asthma, and Immunology 4

Emerging research shows promising results for shrimp oral immunotherapy, which may be considered in the future but is currently investigational, according to the American Academy of Allergy, Asthma, and Immunology 2