[Peanut allergy, not always the correct diagnosis].

Area of Science:

• Pediatric Allergy and Immunology
• Clinical Diagnostics

Background:

• Diagnosing peanut allergy in children presents challenges due to unreliable clinical history and non-specific immunoglobulin E (IgE) testing.
• The gold standard, double-blind placebo-controlled food challenge, is impractical for routine use, leading to potential over-diagnosis and unnecessary dietary restrictions.

Observation:

• This case series examines three children with suspected peanut allergy.
• Clinical and diagnostic considerations were evaluated, emphasizing the importance of detailed patient history.

Findings:

• A thorough patient history, specifically focusing on reproducible and objective symptoms following peanut exposure, was instrumental in diagnosis.
• Peanut allergy was excluded in two of the three cases, enabling dietary normalization and reducing patient/parental anxiety.

Implications:

• A detailed, symptom-focused history is a valuable tool for confirming or excluding peanut allergy diagnoses.
• This approach can prevent unnecessary peanut-free diets, thereby mitigating associated anxiety and improving quality of life.