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Clinical Quiz December 2015

This interior renovation worker presented with itchy scaly rash on his hands and forearms recalcitrant to various treatments.

King-man Ho

Readers are invited to participate in the Clinical Quiz. A prize draw, sponsored by Pfizer Corporation Hong Kong Limited, will be undertaken among the successful entries. For entry into the draw, simply answer the question, fill in the reply slip and return it to the College by 22 February 2016. Each reader is allowed to submit one entry only. The name of the winner and the answer will be published in the March 2016 issue.

Clinical history:

This interior renovation worker presented with itchy scaly rash on his hands and forearms recalcitrant to various treatments. He then also developed itchy facial rash. He undertook patch test and was shown to be positive to potassium dichromate, thiuram mix, and fragrance mix.




A. Irritant contact dermatitis
B. Allergic contact dermatitis to potassium dichromate
C. Allergic contact dermatitis to potassium dichromate and thiuram mix
D. Allergic contact dermatitis to potassium dichromate, thiuram mix and fragrance mix

Answer:
B. Allergic contact dermatitis to potassium dichromate


The slide and the question were prepared by:
Dr King-man Ho, FRCP (Glasg, Edin), MRCP (UK), FHKCP, FHKAM (Medicine)
Consultant Dermatologist-in-Charge,
Social Hygiene Service, PHSB, CHP, DH

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