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Generalised Pruritus — SCE Dermatology MCQ

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HardInflammatory DermatosesGeneralised PruritusSCE Dermatology

A patient with aquagenic pruritus has persistent erythrocytosis on repeat blood counts. Which investigation set most directly evaluates polycythaemia vera?

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Correct answer: D — JAK2 testing, serum erythropoietin and haematology assessment

Aquagenic pruritus is a characteristic symptom of polycythaemia vera. Persistent erythrocytosis should prompt JAK2 testing, serum erythropoietin measurement and haematology assessment rather than an exclusively cutaneous investigation pathway.

Reference: https://academic.oup.com/bjd/pages/bad-guidelines