4th August 2020

A 6-year-old boy attends the GP with his mother. He has had generalised pruritus for the past month

A 6-year-old boy attends the GP with his mother. He has had generalised pruritus for the past month and a flare-up of his long standing atopic eczema for the past week. His extremities are mildly erythematous, and there are widespread excoriations all over the body; there is no crusting or vesicles. He is otherwise thriving and well systemically, with no other abnormalities detected on general examination. He has no food allergies but has always been a ‘picky eater’, which has only gotten worse after the family made the switch to veganism a few months ago. The rash resolved with hydrocortisone cream, but the pruritus remains.

Which of the following options is the most likely cause of his symptoms?

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