Table 2.

Symptoms and times to assess the response to the elimination diet and to oral food challenge.

Clinical Presentation	Response to Elimination Diet	Response to Oral Food Challenge
IgE-mediated symptoms (anaphylaxis, urticaria, angioedema, gastrointestinal, cardiovascular, and respiratory symptoms)	2–3 days	Immediate, 2 h
Food protein-induced enterocolitis syndrome	2 days in acute form, 3–7 days in chronic form	1–4 h, typically 2 h
Food protein-induced proctocolitis	2–3 days	1–3 days
Food protein-induced enteropathy	1–4 weeks	40–72 h
Atopic dermatitis	15 days	4 days