[How to recognize an allergic child]

Area of Science:

• Pediatric Allergy and Immunology
• Clinical Dermatology
• Genetics and Allergy

Context:

• Atopy, a predisposition to allergic diseases, presents with specific clinical signs in children known as atopic stigmata.
• These stigmata are not definitive individually but gain significance when considered alongside a patient's history and potential allergic conditions.
• Family history and personal allergic antecedents are key indicators of an elevated risk for developing atopic diseases.

Purpose:

• To describe the morphological and functional characteristics suggestive of atopy in children (atopic stigmata).
• To emphasize the importance of family history and personal allergic history in diagnosing childhood atopy.
• To discuss the utility and limitations of assessing serum immunoglobulin E (IgE) levels, including cord blood IgE as a predictive marker.

Summary:

• Atopic stigmata are clinical observations aiding in the suspicion of childhood atopy.
• A strong family history of atopic disease significantly increases a child's allergy risk.
• Serum IgE levels, particularly cord blood IgE, can be valuable predictive tools, though diagnostic evaluation should prioritize detailed anamnesis and physical examination.

Impact:

• Provides clinicians with a framework for early identification of children at risk for atopic diseases.
• Highlights the predictive value of genetic predisposition and early immunological markers like IgE.
• Guides diagnostic strategies towards a comprehensive clinical assessment, integrating historical and physical findings with targeted laboratory investigations.