Exercise-induced anaphylaxis: useful screening of food sensitization

Area of Science:

• Allergy and Immunology
• Exercise Physiology
• Clinical Medicine

Background:

• Exercise-induced anaphylaxis is a recognized condition.
• It can be triggered by exercise following the ingestion of specific foods.
• This study investigates the association between food allergies and exercise-induced anaphylaxis.

Purpose of the Study:

• To explore the role of specific food allergies in exercise-induced anaphylaxis.
• To evaluate the effectiveness of dietary avoidance in managing this condition.
• To identify key allergens associated with exercise-induced anaphylaxis.

Main Methods:

• Observed 19 patients experiencing anaphylaxis during or after exercise.
• Investigated potential food triggers through skin tests and RAST, even without a prior allergy history.
• Monitored patients' reactions during exercise after implementing specific food avoidance diets.

Main Results:

• Identified sensitization to wheat flour (12 patients), peanut (7 patients), and tree nuts (6 patients).
• Patients who avoided identified trigger foods before exercise experienced no symptoms, suggesting a food-triggered mechanism.
• Dietary elimination diets allowed most patients to resume exercise safely, with symptom recurrence linked to other food ingestions.

Conclusions:

• Food sensitization testing, especially for wheat, peanut, and tree nuts, is crucial for diagnosing exercise-induced anaphylaxis.
• Specific avoidance of identified food allergens for at least five hours before exercise is essential for prevention.
• Management strategies involving dietary changes enable safe participation in physical activities for affected individuals.