A child has eczema, thrombocytopenia and recurrent infections. What is the diagnosis?

Answer and explanation

Correct answer: C. Wiskott-Aldrich syndrome

  1. Step 1: The triad is eczema, thrombocytopenia and infections. Answer: Wiskott-Aldrich syndrome. Why not the others: DiGeorge syndrome, Severe combined immunodeficiency and Chronic granulomatous disease don't fit.

Practise more Microbiology and Immunology.

Free questions with an explanation for every one, and full timed USMLE Step 1 mock tests.