Urticaria and angioedema in children and adolescents: diagnostic challenge

Area of Science:

• Pediatric Allergy and Immunology
• Dermatology
• Clinical Immunology

Background:

• Urticaria diagnosis in children presents challenges due to diverse triggers and associated conditions.
• Acute urticaria is frequently linked to viral infections, but other factors like food, stings, and drugs are also implicated.
• Chronic urticaria (CU), lasting over six weeks, includes chronic spontaneous urticaria (CSU) and less common chronic inducible urticaria (CindU).

Purpose of the Study:

• To review key diagnostic aspects of urticaria in the pediatric population.
• To highlight the importance of differentiating between acute and chronic urticaria, and various subtypes.
• To emphasize the need for individualized testing and ruling out rare but serious underlying conditions.

Main Methods:

• Review of current literature on pediatric urticaria diagnosis and management.
• Discussion of diagnostic approaches for acute and chronic urticaria, including laboratory and allergy testing.
• Emphasis on provocation tests for inducible urticaria and differential diagnosis from other conditions.

Main Results:

• Acute urticaria often stems from viral infections, with other triggers requiring specific testing based on patient history.
• Chronic urticaria diagnosis involves differentiating CSU from CindU, with specific tests for inducible forms.
• It is crucial to distinguish urticaria from conditions like vasculitis, juvenile idiopathic arthritis, mastocytosis, and bradykinin-mediated angioedema.

Conclusions:

• Accurate diagnosis of pediatric urticaria requires a thorough history and individualized testing.
• Management of chronic urticaria in children has advanced with new guidelines and effective treatments.
• Increased awareness of appropriate diagnostic methods and available treatments is vital for improving pediatric urticaria care.