28th May 2025

A 2-year-old boy presents to clinic with atopic dermatitis.

A 2-year-old boy presents to clinic with atopic dermatitis. His parents noticed that the dermatitis is worse whenever he eats eggs or drinks milk.

What is the most appropriate investigation to identify a cutaneous manifestation of a food allergy?

Select the SINGLE most appropriate option from the list below. Select ONE option only.